User Guide
© 2020 Is Daouda Games
2
Content
Getting started guide ....................................................................................................................................................................................... 17
1. Introduction ............................................................................................................................................................................................ 17
2. About the engine .................................................................................................................................................................................... 17
3. Engine structure ..................................................................................................................................................................................... 17
3.1 app_src................................................................................................................................................................................................ 17
3.2 isEngine .............................................................................................................................................................................................. 18
3.3 data ..................................................................................................................................................................................................... 18
3.4 main.cpp file ....................................................................................................................................................................................... 18
3.4.1 main ............................................................................................................................................................................................... 18
3.4.2 game.play ...................................................................................................................................................................................... 18
3.4.3 game.basicSFMLmain ................................................................................................................................................................... 18
Display .............................................................................................................................................................................................................. 18
1. class GameDisplay .................................................................................................................................................................................. 18
2. Public methods ....................................................................................................................................................................................... 19
2.1 GameDisplay ...................................................................................................................................................................................... 19
2.2 setAdmob ........................................................................................................................................................................................... 19
2.3 rewardVideoStep ............................................................................................................................................................................... 19
2.4 step ..................................................................................................................................................................................................... 19
2.5 draw .................................................................................................................................................................................................... 19
2.6 drawScreen ........................................................................................................................................................................................ 19
2.7 showTempLoading ............................................................................................................................................................................ 19
2.8 setOptionIndex .................................................................................................................................................................................. 20
2.9 setTextAnimation .............................................................................................................................................................................. 20
2.10 setView .......................................................................................................................................................................................... 20
2.11 loadParentResources .................................................................................................................................................................... 20
2.12 loadResources ............................................................................................................................................................................... 20
2.13 setIsRunning ................................................................................................................................................................................. 21
2.14 setIsPlaying ................................................................................................................................................................................... 21
2.15 setSceneStart ................................................................................................................................................................................. 21
2.16 setSceneEnd .................................................................................................................................................................................. 21
2.17 setKeyBackPressed ....................................................................................................................................................................... 21
2.18 isRunning ...................................................................................................................................................................................... 21
2.19 getIsPlaying ................................................................................................................................................................................... 21
2.20 getSceneStart ................................................................................................................................................................................ 21
2.21 getSceneEnd .................................................................................................................................................................................. 22
2.22 getWindowIsActive....................................................................................................................................................................... 22
2.23 getKeyBackPressed ...................................................................................................................................................................... 22
2.24 getView .......................................................................................................................................................................................... 22
2.25 getRenderWindow ........................................................................................................................................................................ 22
2.26 getRenderTexture ......................................................................................................................................................................... 22
2.27 getGameSystem ............................................................................................................................................................................. 22
3
2.28 getFontSystem .............................................................................................................................................................................. 22
2.29 getFontMsg .................................................................................................................................................................................... 23
2.30 getSprButtonSelect ....................................................................................................................................................................... 23
2.31 getOptionIndex ............................................................................................................................................................................. 23
2.32 getSceneWidth .............................................................................................................................................................................. 23
2.33 getSceneHeight ............................................................................................................................................................................. 23
2.34 getDeltaTime ................................................................................................................................................................................. 23
2.35 getDELTA_TIME ............................................................................................................................................................................ 23
2.36 getSprButtonSelectScale .............................................................................................................................................................. 23
2.37 getViewX ........................................................................................................................................................................................ 24
2.38 getViewY ........................................................................................................................................................................................ 24
2.39 getViewW ...................................................................................................................................................................................... 24
2.40 getViewH ....................................................................................................................................................................................... 24
2.41 getBgColor ..................................................................................................................................................................................... 24
2.42 inViewRec ...................................................................................................................................................................................... 24
2.43 mouseCollision .............................................................................................................................................................................. 24
2.44 SDMmanageScene ......................................................................................................................................................................... 26
2.45 SDMmanageSceneEvents ............................................................................................................................................................. 26
2.46 SDMmanageSceneMsgAnswers ................................................................................................................................................... 26
2.47 SDMstep ......................................................................................................................................................................................... 26
2.48 SDMdraw ....................................................................................................................................................................................... 26
2.49 GSMplaySound .............................................................................................................................................................................. 26
2.50 GSMpauseSound ........................................................................................................................................................................... 26
2.51 GSMplayMusic ............................................................................................................................................................................... 26
2.52 GSMpauseMusic ............................................................................................................................................................................ 27
3. Protected elements................................................................................................................................................................................. 27
3.1 enum MsgAnswer .............................................................................................................................................................................. 27
3.2 controlEventFocusClosing ................................................................................................................................................................ 27
3.3 showMessageBox ............................................................................................................................................................................... 27
3.4 updateMsgBox ................................................................................................................................................................................... 27
3.5 updateTimeWait ................................................................................................................................................................................ 28
3.6 drawMsgBox ...................................................................................................................................................................................... 28
SDM (Step and Draw Manager) ......................................................................................................................................................................... 28
1. class SDM ................................................................................................................................................................................................ 28
2. Publics elements of SDM ........................................................................................................................................................................ 28
2.1 m_SDMsceneObjects .......................................................................................................................................................................... 28
2.2 SDMgetObject ..................................................................................................................................................................................... 28
2.3 SDMaddSceneObject .......................................................................................................................................................................... 28
2.4 SDMaddSprite .................................................................................................................................................................................... 29
2.5 SDMsetObjDepth ................................................................................................................................................................................ 29
Game Sound ...................................................................................................................................................................................................... 29
1. class GameSound .................................................................................................................................................................................... 29
4
2. Publics elements of GameSound ............................................................................................................................................................ 29
2.1 GameSound ........................................................................................................................................................................................ 29
2.2 loadResources .................................................................................................................................................................................... 29
2.3 getSoundBuffer .................................................................................................................................................................................. 30
2.4 getSound............................................................................................................................................................................................. 30
Game Music ....................................................................................................................................................................................................... 30
1. class GameMusic ..................................................................................................................................................................................... 30
2. Publics elements of GameMusic ............................................................................................................................................................ 30
2.1 GameMusic ......................................................................................................................................................................................... 30
2.2 loadResources .................................................................................................................................................................................... 30
2.3 getMusic ............................................................................................................................................................................................. 30
GSM (Game Sound System) ............................................................................................................................................................................. 30
1. class GSM ................................................................................................................................................................................................. 31
2. Publics elements of GSM ........................................................................................................................................................................ 31
2.1 GSM Containers .................................................................................................................................................................................. 31
2.2 GSMaddSound .................................................................................................................................................................................... 31
2.3 GSMaddMusic..................................................................................................................................................................................... 31
2.4 GSMgetSound ..................................................................................................................................................................................... 31
2.5 GSMgetMusic ...................................................................................................................................................................................... 31
Entities .............................................................................................................................................................................................................. 32
1. class MainObject ..................................................................................................................................................................................... 32
2. Publics elements of MainObjet .............................................................................................................................................................. 32
2.1 MainObject ......................................................................................................................................................................................... 32
2.2 instanceNumber ................................................................................................................................................................................ 32
2.3 m_SDMcallStep ................................................................................................................................................................................... 32
2.4 m_SDMcallDraw ................................................................................................................................................................................. 32
2.5 setXStart ............................................................................................................................................................................................. 33
2.6 setYStart ............................................................................................................................................................................................. 33
2.7 setXPrevious ...................................................................................................................................................................................... 33
2.8 setYPrevious ...................................................................................................................................................................................... 33
2.9 setStartPosition ................................................................................................................................................................................. 33
2.10 setX ................................................................................................................................................................................................ 33
2.11 setY ................................................................................................................................................................................................ 33
2.12 moveX ............................................................................................................................................................................................ 33
2.13 moveY ............................................................................................................................................................................................ 34
2.14 setPosition ..................................................................................................................................................................................... 34
2.15 setSpriteScale ................................................................................................................................................................................ 34
2.16 setSpeed ........................................................................................................................................................................................ 34
2.17 setHsp ............................................................................................................................................................................................ 34
2.18 setVsp ............................................................................................................................................................................................ 34
2.19 setAngularMove ............................................................................................................................................................................ 34
2.20 setImageXscale .............................................................................................................................................................................. 34
5
2.21 setImageYscale .............................................................................................................................................................................. 35
2.22 setImageScale ................................................................................................................................................................................ 35
2.23 setImageAngle ............................................................................................................................................................................... 35
2.24 setXOffset ...................................................................................................................................................................................... 35
2.25 setYOffset ...................................................................................................................................................................................... 35
2.26 setXYOffset .................................................................................................................................................................................... 35
2.27 setTime .......................................................................................................................................................................................... 35
2.28 setImageAlpha .............................................................................................................................................................................. 35
2.29 setImageIndex ............................................................................................................................................................................... 36
2.30 setMaskW ...................................................................................................................................................................................... 36
2.31 setMaskH ....................................................................................................................................................................................... 36
2.32 setIsActive ..................................................................................................................................................................................... 36
2.33 updateCollisionMask .................................................................................................................................................................... 36
2.34 centerCollisionMask ..................................................................................................................................................................... 36
2.35 updateSprite .................................................................................................................................................................................. 37
2.36 draw ............................................................................................................................................................................................... 37
2.37 drawMask ...................................................................................................................................................................................... 37
2.38 getMask ......................................................................................................................................................................................... 37
2.39 getCircleMask ................................................................................................................................................................................ 37
2.40 getX ................................................................................................................................................................................................ 37
2.41 getY ................................................................................................................................................................................................ 37
2.42 getXStart ........................................................................................................................................................................................ 38
2.43 getYStart ........................................................................................................................................................................................ 38
2.44 getXPrevious ................................................................................................................................................................................. 38
2.45 getYPrevious ................................................................................................................................................................................. 38
2.46 distantToPoint .............................................................................................................................................................................. 38
2.47 distantToObject............................................................................................................................................................................. 38
2.48 pointDirection ............................................................................................................................................................................... 38
2.49 pointDirectionSprite ..................................................................................................................................................................... 39
2.50 getSpeed ........................................................................................................................................................................................ 39
2.51 getHsp ............................................................................................................................................................................................ 39
2.52 getVsp ............................................................................................................................................................................................ 39
2.53 getFrame ....................................................................................................................................................................................... 39
2.54 getFrameStart ............................................................................................................................................................................... 39
2.55 getFrameEnd ................................................................................................................................................................................. 40
2.56 getImageXscale ............................................................................................................................................................................. 40
2.57 getImageYscale ............................................................................................................................................................................. 40
2.58 getImageScale ............................................................................................................................................................................... 40
2.59 getImageAngle .............................................................................................................................................................................. 40
2.60 getXOffset ...................................................................................................................................................................................... 40
2.61 getYOffset ...................................................................................................................................................................................... 40
2.62 getTime .......................................................................................................................................................................................... 40
6
2.63 getInstanceId................................................................................................................................................................................. 41
2.64 getMaskW ...................................................................................................................................................................................... 41
2.65 getMaskH ....................................................................................................................................................................................... 41
2.66 getIsActive ..................................................................................................................................................................................... 41
2.67 getImageAlpha .............................................................................................................................................................................. 41
2.68 getImageIndex .............................................................................................................................................................................. 41
2.69 getSpriteWidth .............................................................................................................................................................................. 41
2.70 getSpriteHeight ............................................................................................................................................................................. 41
2.71 getSpriteX ...................................................................................................................................................................................... 42
2.72 getSpriteY ...................................................................................................................................................................................... 42
2.73 getSpriteCenterX ........................................................................................................................................................................... 42
2.74 getSpriteCenterY ........................................................................................................................................................................... 42
2.75 placeMetting .................................................................................................................................................................................. 42
2.76 getSprite ........................................................................................................................................................................................ 42
2.77 setFrame ........................................................................................................................................................................................ 42
3. Other functions of MainObject ............................................................................................................................................................... 43
3.1 instanceExist ...................................................................................................................................................................................... 43
3.2 operator()........................................................................................................................................................................................... 43
3.3 sortObjArrayByX................................................................................................................................................................................ 43
3.4 sortObjArrayByDepth........................................................................................................................................................................ 44
3.5 operator> ........................................................................................................................................................................................... 44
3.6 operator< ........................................................................................................................................................................................... 44
Forms for collision masks................................................................................................................................................................................... 44
1. class Rectangle ........................................................................................................................................................................................ 44
2. class Circle............................................................................................................................................................................................... 44
The Parent Classes of MainObject ..................................................................................................................................................................... 44
1. class DepthObject ................................................................................................................................................................................... 45
1.1 enum Depth ........................................................................................................................................................................................ 45
1.2 DepthObject ....................................................................................................................................................................................... 45
1.3 setDepth ............................................................................................................................................................................................. 45
1.4 getDepth ............................................................................................................................................................................................. 45
2. class Destructible ................................................................................................................................................................................... 45
2.1 Destructible ........................................................................................................................................................................................ 45
2.2 setDestroyed ...................................................................................................................................................................................... 46
2.3 isDestroyed ........................................................................................................................................................................................ 46
3. class Visibility ......................................................................................................................................................................................... 46
3.1 Visibility ............................................................................................................................................................................................. 46
3.2 setVisible ............................................................................................................................................................................................ 46
3.3 getVisible ............................................................................................................................................................................................ 46
4. class Health ............................................................................................................................................................................................. 46
4.1 Health ................................................................................................................................................................................................. 47
4.2 setHealth ............................................................................................................................................................................................ 47
7
4.3 setMaxHealth ..................................................................................................................................................................................... 47
4.4 addHealth ........................................................................................................................................................................................... 47
4.5 getHealth ............................................................................................................................................................................................ 47
4.6 getMaxHealth ..................................................................................................................................................................................... 47
5. class HurtEffect ....................................................................................................................................................................................... 47
5.1 HurtEffect ........................................................................................................................................................................................... 48
5.2 hurtStep .............................................................................................................................................................................................. 48
5.3 setIsHurt ............................................................................................................................................................................................. 48
5.4 getIsHurt ............................................................................................................................................................................................ 48
6. class ScorePoint ...................................................................................................................................................................................... 48
6.1 ScorePoint .......................................................................................................................................................................................... 48
6.2 setScorePoint ..................................................................................................................................................................................... 48
6.3 getScorePoint ..................................................................................................................................................................................... 49
7. class Step ................................................................................................................................................................................................. 49
7.1 Step ..................................................................................................................................................................................................... 49
7.2 setStep ................................................................................................................................................................................................ 49
7.3 addStep ............................................................................................................................................................................................... 49
7.4 reduceStep ......................................................................................................................................................................................... 49
7.5 getStep ................................................................................................................................................................................................ 49
8. class Name .............................................................................................................................................................................................. 49
8.1 Name................................................................................................................................................................................................... 50
8.2 setName .............................................................................................................................................................................................. 50
8.3 getName ............................................................................................................................................................................................. 50
9. class FilePath .......................................................................................................................................................................................... 50
9.1 FilePath .............................................................................................................................................................................................. 50
9.2 setFilePath.......................................................................................................................................................................................... 50
9.3 getFilePath ......................................................................................................................................................................................... 50
9.4 getFileIsLoaded.................................................................................................................................................................................. 50
The Backgroud ................................................................................................................................................................................................... 51
1. class Background .................................................................................................................................................................................... 51
2. Public methods ....................................................................................................................................................................................... 51
2.1 Background ........................................................................................................................................................................................ 51
2.2 step ..................................................................................................................................................................................................... 51
Admob ............................................................................................................................................................................................................... 51
1. class AdmobManager ............................................................................................................................................................................. 51
2. Public methods ....................................................................................................................................................................................... 51
2.1 AdmobManager ................................................................................................................................................................................. 51
2.2 loadBannerAd .................................................................................................................................................................................... 52
2.3 showBannerAd .................................................................................................................................................................................. 52
2.4 hideBannerAd .................................................................................................................................................................................... 52
2.5 loadRewardVideo .............................................................................................................................................................................. 52
2.6 updateSFMLApp ................................................................................................................................................................................ 52
8
2.7 checkAdObjInit .................................................................................................................................................................................. 52
2.8 checkAdRewardObjReinitialize ........................................................................................................................................................ 52
3. Other Functions of AdmobManager ...................................................................................................................................................... 52
3.1 ProcessEvents & WaitForFutureCompletion ................................................................................................................................... 52
3.2 checkAdState ...................................................................................................................................................................................... 53
Time .................................................................................................................................................................................................................. 53
1. class GameTime ...................................................................................................................................................................................... 53
2. Public methods of GameTime ................................................................................................................................................................ 53
2.1 GameTime .......................................................................................................................................................................................... 53
2.2 step ..................................................................................................................................................................................................... 53
2.3 addTimeValue .................................................................................................................................................................................... 53
2.4 setTimeValue ..................................................................................................................................................................................... 54
2.5 setMSecond ........................................................................................................................................................................................ 54
2.6 getTimeString .................................................................................................................................................................................... 54
2.7 getTimeValue ..................................................................................................................................................................................... 54
2.8 getMinute ........................................................................................................................................................................................... 54
2.9 getSecond ........................................................................................................................................................................................... 54
2.10 getMSecond ................................................................................................................................................................................... 54
2.11 compareTime ................................................................................................................................................................................ 54
2.12 operator=....................................................................................................................................................................................... 55
2.13 operator<< .................................................................................................................................................................................... 55
3. Other functions of GameTime ................................................................................................................................................................ 55
Game control .................................................................................................................................................................................................... 55
1. Elements of GameKeyData ..................................................................................................................................................................... 55
2.1 enum VirtualKeyIndex ...................................................................................................................................................................... 55
2.2 GameKeyData ..................................................................................................................................................................................... 56
2.3 loadResources .................................................................................................................................................................................... 56
2.4 step ..................................................................................................................................................................................................... 56
2.5 draw .................................................................................................................................................................................................... 56
2.6 m_keyPausePressed .......................................................................................................................................................................... 56
2.7 m_keyLeftPressed .............................................................................................................................................................................. 56
2.8 m_keyRightPressed ........................................................................................................................................................................... 56
2.9 m_keyUpPressed ................................................................................................................................................................................ 57
2.10 m_keyDownPressed...................................................................................................................................................................... 57
2.11 m_keyAPressed ............................................................................................................................................................................. 57
2.12 m_keyBPressed ............................................................................................................................................................................. 57
2.13 m_keyAUsed .................................................................................................................................................................................. 57
2.14 m_keyBUsed .................................................................................................................................................................................. 57
2.15 m_keyLeftUsed .............................................................................................................................................................................. 57
2.16 m_keyRightUsed ........................................................................................................................................................................... 57
2.17 m_keyUpUsed ................................................................................................................................................................................ 58
2.18 m_keyDownUsed .......................................................................................................................................................................... 58
9
2.19 m_disableAllKey ............................................................................................................................................................................ 58
2.20 m_hideGamePad ........................................................................................................................................................................... 58
2.21 m_keyboardA ................................................................................................................................................................................ 58
2.22 m_keyboardB ................................................................................................................................................................................ 58
2.23 m_keyboardLeft ............................................................................................................................................................................ 58
2.24 m_keyboardRight .......................................................................................................................................................................... 58
2.25 m_keyboardUp .............................................................................................................................................................................. 59
2.26 m_keyboardDown ......................................................................................................................................................................... 59
2.27 m_moveKeyPressed ...................................................................................................................................................................... 59
2.28 m_actionKeyPressed ..................................................................................................................................................................... 59
2.29 keyLeftPressed .............................................................................................................................................................................. 59
2.30 keyRightPressed ........................................................................................................................................................................... 59
2.31 keyUpPressed ............................................................................................................................................................................... 59
2.32 keyDownPressed .......................................................................................................................................................................... 59
2.33 keyAPressed .................................................................................................................................................................................. 60
2.34 keyBPressed .................................................................................................................................................................................. 60
2.35 virtualKeyPressed ......................................................................................................................................................................... 60
2. Other functions of GameKeyData .......................................................................................................................................................... 60
Game System .................................................................................................................................................................................................... 60
1. class GameSystem .................................................................................................................................................................................. 60
2. Elements of GameSystem ....................................................................................................................................................................... 60
2.1 enum ValidationButton ..................................................................................................................................................................... 61
2.2 GameSystem ....................................................................................................................................................................................... 61
2.3 isPressed ............................................................................................................................................................................................ 61
2.4 keyIsPressed ...................................................................................................................................................................................... 62
2.5 fileExist ............................................................................................................................................................................................... 62
2.6 playSound ........................................................................................................................................................................................... 62
2.7 playMusic ........................................................................................................................................................................................... 62
2.8 stopSound .......................................................................................................................................................................................... 62
2.9 stopMusic ........................................................................................................................................................................................... 63
2.10 useVibrate ..................................................................................................................................................................................... 63
2.11 saveConfig ..................................................................................................................................................................................... 63
2.12 loadConfig ..................................................................................................................................................................................... 63
2.13 savePadConfig ............................................................................................................................................................................... 63
2.14 loadPadConfig ............................................................................................................................................................................... 63
2.15 m_disableKey ................................................................................................................................................................................ 63
2.16 m_enableSound ............................................................................................................................................................................. 63
2.17 m_enableMusic .............................................................................................................................................................................. 64
2.18 m_enableVibrate ........................................................................................................................................................................... 64
2.19 m_keyIsPressed............................................................................................................................................................................. 64
2.20 m_firstLaunch ............................................................................................................................................................................... 64
2.21 m_validationMouseKey ................................................................................................................................................................ 64
10
2.22 m_validationKeyboardKey ........................................................................................................................................................... 64
2.23 m_gameLanguage.......................................................................................................................................................................... 64
2.24 m_padAlpha ................................................................................................................................................................................... 64
Game System Extended ..................................................................................................................................................................................... 65
1. class GameSystemExtended................................................................................................................................................................... 65
2. Elements of GameSystemExtended ....................................................................................................................................................... 65
2.1 GameSystemExtended ....................................................................................................................................................................... 65
2.2 initSystemData ................................................................................................................................................................................... 65
2.3 initProgress ........................................................................................................................................................................................ 65
2.4 initData ............................................................................................................................................................................................... 65
2.5 saveData ............................................................................................................................................................................................. 65
2.6 loadData ............................................................................................................................................................................................. 65
2.7 m_launchOption ................................................................................................................................................................................. 66
2.8 game play variables ........................................................................................................................................................................... 66
Game Function ................................................................................................................................................................................................. 66
1. General Function .................................................................................................................................................................................... 66
1.1 VALUE_CONVERSION ........................................................................................................................................................................ 66
1.2 WITH .................................................................................................................................................................................................. 66
1.3 w_chart_tToStr ................................................................................................................................................................................... 67
1.4 strToWStr ........................................................................................................................................................................................... 67
1.5 numToStr ........................................................................................................................................................................................... 67
1.6 strToNum ........................................................................................................................................................................................... 67
1.7 numToWStr ........................................................................................................................................................................................ 67
1.8 writeZero............................................................................................................................................................................................ 67
1.9 getMSecond ........................................................................................................................................................................................ 68
1.10 showLog ........................................................................................................................................................................................ 68
1.11 arraySize ........................................................................................................................................................................................ 68
1.12 choose ............................................................................................................................................................................................ 68
1.13 setVarLimit .................................................................................................................................................................................... 68
1.14 isIn ................................................................................................................................................................................................. 69
1.15 isBetween ...................................................................................................................................................................................... 69
1.16 isCrossing ...................................................................................................................................................................................... 69
1.17 side ................................................................................................................................................................................................. 69
1.18 sign ................................................................................................................................................................................................. 69
1.19 pointDirection ............................................................................................................................................................................... 69
1.20 pointDistance ................................................................................................................................................................................ 69
1.21 radToDeg ....................................................................................................................................................................................... 70
1.22 degToRad ...................................................................................................................................................................................... 70
1.23 lengthDirX ..................................................................................................................................................................................... 70
1.24 lengthDirY ..................................................................................................................................................................................... 70
1.25 increaseVar ................................................................................................................................................................................... 70
1.26 decreaseVar ................................................................................................................................................................................... 70
11
1.27 collisionTest .................................................................................................................................................................................. 71
2. Function on objects SFML ...................................................................................................................................................................... 71
2.1 getSFMLObjAngle .............................................................................................................................................................................. 71
2.2 getSFMLObjXScale ............................................................................................................................................................................. 71
2.3 getSFMLObjYScale ............................................................................................................................................................................. 71
2.4 getSFMLObjWidth.............................................................................................................................................................................. 71
2.5 getSFMLObjHeight ............................................................................................................................................................................. 71
2.6 getSFMLObjOriginX ........................................................................................................................................................................... 72
2.7 getSFMLObjOriginY ........................................................................................................................................................................... 72
2.8 getSFMLObjX ...................................................................................................................................................................................... 72
2.9 getSFMLObjY ...................................................................................................................................................................................... 72
2.10 setSFMLObjAngle .......................................................................................................................................................................... 72
2.11 setSFMLObjRotate ........................................................................................................................................................................ 73
2.12 setSFMLObjScaleX_Y ..................................................................................................................................................................... 73
2.13 setSFMLObjScale ........................................................................................................................................................................... 73
2.14 setSFMLObjOrigin ......................................................................................................................................................................... 73
2.15 setSFMLObjX ................................................................................................................................................................................. 73
2.16 setSFMLObjY ................................................................................................................................................................................. 73
2.17 centerSFMLObj .............................................................................................................................................................................. 74
2.18 centerSFMLObjX ........................................................................................................................................................................... 74
2.19 centerSFMLObjY ........................................................................................................................................................................... 74
2.20 setSFMLObjX_Y ............................................................................................................................................................................. 74
2.21 moveSFMLObjX ............................................................................................................................................................................. 74
2.22 moveSFMLObjY ............................................................................................................................................................................. 74
2.23 setSFMLObjSize ............................................................................................................................................................................. 75
2.24 setSFMLObjAlpha.......................................................................................................................................................................... 75
2.25 setSFMLObjAlpha2 ....................................................................................................................................................................... 75
2.26 setSFMLObjColor .......................................................................................................................................................................... 75
2.27 setSFMLObjFillColor ..................................................................................................................................................................... 76
2.28 scaleAnimation ............................................................................................................................................................................. 76
2.29 setFrame ........................................................................................................................................................................................ 76
2.30 setSFMLObjOutlineColor .............................................................................................................................................................. 76
2.31 setSFMLObjTexRec ....................................................................................................................................................................... 76
2.32 setSFMLObjProperties .................................................................................................................................................................. 77
2.33 loadSFMLObjResource ................................................................................................................................................................. 77
2.34 getSFMLSndState .......................................................................................................................................................................... 77
2.35 collisionTestSFML ......................................................................................................................................................................... 77
2.36 createRectangle............................................................................................................................................................................. 78
2.37 textStyleConfig .............................................................................................................................................................................. 78
2.38 createWText .................................................................................................................................................................................. 78
2.39 createText...................................................................................................................................................................................... 78
2.40 createSprite ................................................................................................................................................................................... 78
12
2.41 mouseCollision .............................................................................................................................................................................. 79
3. Other functions ....................................................................................................................................................................................... 80
3.1 vibrate ................................................................................................................................................................................................ 80
3.2 openURL ............................................................................................................................................................................................. 80
3.3 setScreenLock .................................................................................................................................................................................... 80
3.4 jstring2string ..................................................................................................................................................................................... 80
3.5 getDeviceId ........................................................................................................................................................................................ 81
External library ................................................................................................................................................................................................ 81
1. Swoosh .................................................................................................................................................................................................... 81
2. Tiny File Dialogs (only for Windows and Linux) .................................................................................................................................. 81
2.1 class TinyDialogBox ........................................................................................................................................................................... 81
2.2 tinyString ............................................................................................................................................................................................ 81
2.3 TINY_FILE_DIALOGBOX_PATH ......................................................................................................................................................... 81
2.4 enum FileDialogType ........................................................................................................................................................................ 81
2.5 enum DialogType ............................................................................................................................................................................... 82
2.6 enum IconType .................................................................................................................................................................................. 82
2.7 enumDialogTypeToStr / enumIconTypeToStr ................................................................................................................................ 82
2.8 showDialogBox .................................................................................................................................................................................. 82
2.9 showFileDialogBox ............................................................................................................................................................................ 83
2.10 showFolderDialogBox .................................................................................................................................................................. 83
3. Box 2D ..................................................................................................................................................................................................... 83
Game Engine ..................................................................................................................................................................................................... 84
1. class GameEngine ................................................................................................................................................................................... 84
2. Methods of GameEngine ........................................................................................................................................................................ 84
2.1 GameEngine ....................................................................................................................................................................................... 84
2.2 initEngine ........................................................................................................................................................................................... 84
2.3 play ..................................................................................................................................................................................................... 84
2.4 basicSFMLmain .................................................................................................................................................................................. 84
2.5 getRenderWindow............................................................................................................................................................................. 84
Game setup ....................................................................................................................................................................................................... 84
1. enum DisplayOption ............................................................................................................................................................................... 85
2. Window setting....................................................................................................................................................................................... 85
2.1 WINDOW_WIDTH .............................................................................................................................................................................. 85
2.2 WINDOW_HEIGHT ............................................................................................................................................................................. 85
2.3 VIEW_WIDTH ..................................................................................................................................................................................... 85
2.4 VIEW_HEIGHT .................................................................................................................................................................................... 85
2.5 FPS ...................................................................................................................................................................................................... 85
2.6 WINDOW_SETTINGS ......................................................................................................................................................................... 86
3. Parameter of validation buttons............................................................................................................................................................ 86
3.1 KEY_VALIDATION_MOUSE ................................................................................................................................................................ 86
3.2 KEY_VALIDATION_KEYBOARD ......................................................................................................................................................... 86
3.3 KEY_CANCEL ...................................................................................................................................................................................... 86
13
4. Keyboard key setting.............................................................................................................................................................................. 86
4.1 KEY_A ................................................................................................................................................................................................. 86
4.2 KEY_B ................................................................................................................................................................................................. 86
4.3 KEY_LEFT ........................................................................................................................................................................................... 86
4.4 KEY_RIGHT ......................................................................................................................................................................................... 86
4.5 KEY_UP ............................................................................................................................................................................................... 87
4.6 KEY_DOWN ........................................................................................................................................................................................ 87
5. Game information ................................................................................................................................................................................... 87
5.1 MAJOR ................................................................................................................................................................................................ 87
5.2 MINOR ................................................................................................................................................................................................ 87
5.3 getGameVersion ................................................................................................................................................................................. 87
5.4 GAME_NAME ...................................................................................................................................................................................... 87
5.5 GAME_AUTHOR ................................................................................................................................................................................. 87
6. Admob setting ......................................................................................................................................................................................... 88
6.1 Ad Id ................................................................................................................................................................................................... 88
6.1.1 kAdMobAppID ............................................................................................................................................................................... 88
6.1.2 kBannerAdUnit ............................................................................................................................................................................. 88
6.1.3 kRewardedVideoAdUnit ............................................................................................................................................................... 88
6.2 Banner size ......................................................................................................................................................................................... 88
6.2.1 kBannerWidth ............................................................................................................................................................................... 88
6.2.2 kBannerHeight .............................................................................................................................................................................. 88
6.3 Target audience ................................................................................................................................................................................. 88
6.3.1 kBirthdayDay ................................................................................................................................................................................ 88
6.3.2 kBirthdayMonth ............................................................................................................................................................................ 88
6.3.3 kBirthdayYear ............................................................................................................................................................................... 89
6.3.4 kKeywords .................................................................................................................................................................................... 89
7. Path of the resource files........................................................................................................................................................................ 89
7.1 GUI_DIR .............................................................................................................................................................................................. 89
7.2 FONT_DIR ........................................................................................................................................................................................... 89
7.3 SPRITES_DIR ...................................................................................................................................................................................... 89
7.4 TILES_DIR ........................................................................................................................................................................................... 89
7.5 SFX_DIR .............................................................................................................................................................................................. 89
7.6 MUSIC_DIR ......................................................................................................................................................................................... 89
8. Game package name (Android) ............................................................................................................................................................. 90
9. Backup file path ...................................................................................................................................................................................... 90
9.1 GAME_DATA_FILE ............................................................................................................................................................................. 90
9.2 CONFIG_FILE ...................................................................................................................................................................................... 90
9.3 GAME_PAD_FILE ................................................................................................................................................................................ 90
Activity .............................................................................................................................................................................................................. 90
1. class GameActivity .................................................................................................................................................................................. 90
2. Elements of GameActivity ...................................................................................................................................................................... 90
2.1 GameActivity ...................................................................................................................................................................................... 90
14
2.2 m_gameScene ..................................................................................................................................................................................... 91
2.3 onStart ................................................................................................................................................................................................ 91
2.4 onUpdate ............................................................................................................................................................................................ 91
2.5 onLeave .............................................................................................................................................................................................. 91
2.6 onExit ................................................................................................................................................................................................. 91
2.7 onEnter ............................................................................................................................................................................................... 91
2.8 onResume ........................................................................................................................................................................................... 91
2.9 onDraw ............................................................................................................................................................................................... 91
2.10 onEnd ............................................................................................................................................................................................. 92
Game Level ....................................................................................................................................................................................................... 92
1. Level ........................................................................................................................................................................................................ 92
2. Integration of a level .............................................................................................................................................................................. 92
3. Elements to manage levels ..................................................................................................................................................................... 92
3.1 namespace level ................................................................................................................................................................................. 92
3.2 enum LevelId ..................................................................................................................................................................................... 92
3.3 getLevelMap ....................................................................................................................................................................................... 92
Game language ................................................................................................................................................................................................. 93
1. Languages ............................................................................................................................................................................................... 93
2. Elements to manage languages ............................................................................................................................................................. 93
2.1 namespace lang.................................................................................................................................................................................. 93
2.2 enum GameLanguage ........................................................................................................................................................................ 93
Game Dialog Box .............................................................................................................................................................................................. 94
1. class GameDialog .................................................................................................................................................................................... 94
2. Elements of GameDialog ........................................................................................................................................................................ 94
2.1 GameDialog ........................................................................................................................................................................................ 94
2.2 enum DialogIndex .............................................................................................................................................................................. 94
2.3 linkArrayToEnum .............................................................................................................................................................................. 95
2.4 step ..................................................................................................................................................................................................... 95
2.5 setDialog ............................................................................................................................................................................................. 95
2.6 setMouseInCollison ........................................................................................................................................................................... 96
2.7 draw .................................................................................................................................................................................................... 96
2.8 getDialogIndex ................................................................................................................................................................................... 96
2.9 getMouseInCollison ........................................................................................................................................................................... 96
2.10 showDialog .................................................................................................................................................................................... 96
Game Example .................................................................................................................................................................................................. 96
1. Introduction ............................................................................................................................................................................................ 96
2. How the game will be created? .............................................................................................................................................................. 97
2.1 Here are the elements of the engine that the game will use ........................................................................................................... 97
2.2 The objects that will be used in the game ........................................................................................................................................ 97
2.3 The roles of objects ............................................................................................................................................................................ 97
3. Integration of game sentences ............................................................................................................................................................... 98
3.1 Creation of sentences in GameLanguage.h ...................................................................................................................................... 98
15
3.2 Associate of the dialog box with the sentence of the game ............................................................................................................. 99
4. Creation of game classes ...................................................................................................................................................................... 100
4.1 Obstacle class ................................................................................................................................................................................... 100
4.1.1 Header ......................................................................................................................................................................................... 100
4.1.2 Implementation .......................................................................................................................................................................... 101
4.1.2.1 Obstacle .................................................................................................................................................................................. 101
4.1.2.2 step .......................................................................................................................................................................................... 101
4.2 Bonus class ....................................................................................................................................................................................... 101
4.2.1 Header ......................................................................................................................................................................................... 101
4.2.2 Implementation .......................................................................................................................................................................... 102
4.2.2.1 Bonus ...................................................................................................................................................................................... 102
4.2.2.2 step .......................................................................................................................................................................................... 102
4.3 Player class ....................................................................................................................................................................................... 102
4.3.1 Header ......................................................................................................................................................................................... 102
4.3.2 Implementation .......................................................................................................................................................................... 103
4.3.2.1 Player ...................................................................................................................................................................................... 103
4.3.2.2 loadResources ........................................................................................................................................................................ 103
4.3.2.3 step .......................................................................................................................................................................................... 103
4.4 HUD class ......................................................................................................................................................................................... 105
4.4.1 Header ......................................................................................................................................................................................... 105
4.4.2 Implementation .......................................................................................................................................................................... 106
4.4.2.1 HUD ......................................................................................................................................................................................... 106
4.4.2.2 loadResources ........................................................................................................................................................................ 106
4.4.2.3 step .......................................................................................................................................................................................... 106
4.4.2.4 draw ........................................................................................................................................................................................ 106
4.5 MainMenu class ............................................................................................................................................................................... 107
4.5.1 Header ......................................................................................................................................................................................... 107
4.5.2 Implementation .......................................................................................................................................................................... 107
4.5.2.1 MainMenu ............................................................................................................................................................................... 107
4.5.2.2 loadResources ........................................................................................................................................................................ 107
4.5.2.3 componentsController ........................................................................................................................................................... 108
4.5.2.4 step .......................................................................................................................................................................................... 110
4.5.2.5 draw ........................................................................................................................................................................................ 111
4.6 GameLevel class ............................................................................................................................................................................... 112
4.6.1 Header ......................................................................................................................................................................................... 112
4.6.2 Implementation .......................................................................................................................................................................... 113
4.6.2.1 GameLevel .............................................................................................................................................................................. 113
4.6.2.2 loadResources ........................................................................................................................................................................ 113
4.6.2.3 updateObjPlayer .................................................................................................................................................................... 115
4.6.2.4 playerLose .............................................................................................................................................................................. 115
4.6.2.5 updateObjObstacleList........................................................................................................................................................... 115
4.6.2.6 updateObjBonusList .............................................................................................................................................................. 116
16
4.6.2.7 updateBackground ................................................................................................................................................................. 117
4.6.2.8 gamePlay ................................................................................................................................................................................ 117
4.6.2.9 step .......................................................................................................................................................................................... 118
4.6.2.10 draw ........................................................................................................................................................................................ 119
5. Integration and use of scenes in Activity ............................................................................................................................................ 119
6. Improvement ........................................................................................................................................................................................ 122
17
Getting started guide
1. Introduction
Welcome to the is::Engine v2.1 game engine user guide. The purpose of this guide is to detail how the API works. This
is not a tutorial even if there is an example that shows you how to use the engine to create a game.
2. About the engine
is::Engine is a tool that relies on the mechanisms of the SFML library to work. So if you want to use this tool it is
strongly advised to know at least the basics of SFML. The objective of this engine is to offer you features that allow you
to create a game with the most flexibility possible and to easily carry it on various platforms (Windows, Linux,
Android).
The engine is directly delivered with an IDE to avoid reconfigurations and to start quickly with this one. Note that each
IDE with which the engine is delivered makes it possible to carry your project on a target platform. So the Android
Studio project lets you use the engine to develop on Android.
The header which gives access to the engine is: isEngine/core/GameEngine.h.
3. Engine structure
3.1 app_src
Directory that contains the source code of the game.
Description of these subdirectories:
activity: Contains the Activity class (click here for more information: 1) which launches the different scenes
of the game and ensures their interactions.
config: Contains the GameConfig.cpp file (click here for more information: 1) which allows you to define the
general parameters of the game.
gamesystem_ext: Contains a class derived (click here for more information: 1) from GameSystem (click
here for more information: 1) which allows you to manipulate the game data (save, load, etc.).
language: Contains the GameLanguage.cpp file (click here for more information: 1) which allows you to
manage everything related to the languages of the game.
levels: Contains the levels and the Level.h file (click here for more information: 1) which allows you to
integrate them into the game.
objects: Contains the objects that will be used in the different scenes.
isEngine
app_src
config
data
scenes
objects
activity
levels
language
Game
gamesyste
m_ext
main.cpp
File
18
scenes: Contains the different scenes of the game (click here for more information: 1) (Introduction, Main
menu, ...).
3.2 isEngine
Directory that contains the source code of the game engine.
3.3 data
Directory of game resource files (music, sound effects, images, ...).
3.4 main.cpp file
This file contains the function which allows to launch the program.
3.4.1 main
int main()
Source Code
The main function that launches the game engine. Inside you will find GameEngine game; which initializes the game
engine.
Return 0 when the program is finished and another value if there is an error during execution.
3.4.2 game.play
game.play()
Source Code
Allows to use the main loop of the game engine which allows you to launch the different game scenes (Introduction,
Main menu, ...).
3.4.3 game.basicSFMLmain
game.basicSFMLmain()
Source Code
Displays a classic SFML window. This function allows you to use your own rendering loop with the engine. Very useful
if you want to use an SFML project already under development with the engine or to integrate your own components
into the engine.
Display
1. class GameDisplay
class GameDisplay;
Header : isEngine/system/display/GameDisplay.h
Source Code
Abstract class that allows you to create the scene of a game. A scene is a place where the objects of the game come to life
(Main Menu, Level, etc.). This class offers you functions that allow you to easily manipulate the view, apply window
events on the scene, make animations on texts and sprites, display dialog boxes, etc.
19
2. Public methods
2.1 GameDisplay
GameDisplay(sf::RenderWindow &window, sf::View &view, sf::RenderTexture &surface, GameSystemExtended
&gameSysExt, sf::Color bgColor)
Source Code
Constructor which allows you to create a GameDisplay object, it takes as parameter the window of the application, the
surface of the SWOOSH library which allows to make transition effects, GameSystemExtended (click here for more
information: 1) and the background color of the scene.
2.2 setAdmob
virtual void setAdmob(AdmobManager *admob)
Source Code
Allows you to integrate the Ad Manager (Admob) into a scene.
2.3 rewardVideoStep
virtual int rewardVideoStep()
Source Code
Allows you to launch a reward video ad.
Return 1 if the reward video is launched and 0 if there is an error (often occurs when the ad request did not work).
2.4 step
virtual void step() = 0
Source Code
Method which makes it possible to implement the part where the objects of the scene are updated (displacement of the
objects, detection of collision, etc).
Note: When the SDM is activated and the user does not overload this function the SDM takes care of calling this
method to automatically update the objects of the scene and the events of the window.
2.5 draw
virtual void draw() = 0
Source Code
Method which makes it possible to implement the part where the objects of the scene will be draw.
Note: When the SDM is activated and the user does not overload this function the SDM takes care of calling this
method to automatically draw the objects of the scene.
2.6 drawScreen
virtual void drawScreen()
Source Code
Method for implementing the part where the objects of the game scene will be draw.
2.7 showTempLoading
20
virtual void showTempLoading(float time = 3.f * 59.f)
Source Code
Displays a false loading screen (Useful for making transitions in the same scene).
Parameter time represents the duration (in milliseconds) of the loading.
2.8 setOptionIndex
First form :
void setOptionIndex(int optionIndexValue, bool callWhenClick, float buttonScale = 1.3f)
Source Code
Allows to make animations on texts and play a sound when you change an option.
Second form :
void setOptionIndex(int optionIndexValue)
Source Code
Allows to change an option.
2.9 setTextAnimation
First form :
void setTextAnimation(sf::Text &txt, sf::Sprite &spr, int val)
Source Code
Allows to make an animation on a text and a sprite according to the choice of an option.
Second form :
void setTextAnimation(sf::Text &txt, int &var, int val)
Source Code
Allows to make an animation on a text according to the choice of an option.
2.10 setView
void setView()
Source Code
Updates the position of the view in the scene.
2.11 loadParentResources
virtual bool loadParentResources()
Source Code
Loads the resources that allow you to display dialog boxes in a scene.
It is generally used in the loadResources function of a scene.
2.12 loadResources
21
virtual bool loadResources() = 0
Source Code
Allows you to implement the loading of resources that are used in a scene.
2.13 setIsRunning
void setIsRunning(bool val)
Source Code
Allows to define the execution state of the scene.
2.14 setIsPlaying
void setIsPlaying(bool val)
Source Code
Allows to define the m_isPlaying variable.
2.15 setSceneStart
void setSceneStart(bool val)
Source Code
Allows to define the m_sceneStart variable.
2.16 setSceneEnd
void setSceneEnd(bool val)
Source Code
Allows to define the m_sceneEnd variable.
2.17 setKeyBackPressed
void setKeyBackPressed(bool val)
Source Code
Allows to define the m_keyBackPressed variable.
2.18 isRunning
virtual bool isRunning() const
Source Code
Return true if a scene is running and false if not.
2.19 getIsPlaying
virtual bool getIsPlaying() const
Source Code
Return true if a scene is active and false if not.
2.20 getSceneStart
22
virtual bool getSceneStart() const
Source Code
Return true if a scene is at the start of execution and false if not.
2.21 getSceneEnd
virtual bool getSceneEnd() const
Source Code
Return true if a scene comes to an end and false if not.
2.22 getWindowIsActive
virtual bool getWindowIsActive() const
Source Code
Return true if the window is active and false if not.
2.23 getKeyBackPressed
virtual bool getKeyBackPressed() const
Source Code
Return the value of the m_keyBackPressed vraiable.
2.24 getView
virtual sf::View& getView() const
Source Code
Return the view of a scene.
2.25 getRenderWindow
virtual sf::RenderWindow& getRenderWindow()
Source Code
Return the scene execution window.
2.26 getRenderTexture
virtual sf::RenderTexture& getRenderTexture() const
Source Code
Return the surface on which we draw the objects of a scene.
2.27 getGameSystem
virtual GameSystemExtended& getGameSystem()
Source Code
Return the game system extended object.
2.28 getFontSystem
23
virtual sf::Font& getFontSystem()
Source Code
Return the system font.
2.29 getFontMsg
virtual sf::Font& getFontMsg()
Source Code
Return the dialog box font.
2.30 getSprButtonSelect
virtual sf::Sprite& getSprButtonSelect()
Source Code
Return the option selection Sprite.
2.31 getOptionIndex
virtual int getOptionIndex()
Source Code
Return the chosen option.
2.32 getSceneWidth
virtual unsigned int getSceneWidth()
Source Code
Return the width of the scene.
2.33 getSceneHeight
virtual unsigned int getSceneHeight()
Source Code
Return the height of the scene.
2.34 getDeltaTime
float getDeltaTime()
Source Code
Return the execution time in seconds.
2.35 getDELTA_TIME
float getDELTA_TIME() const
Source Code
Return the variable DELTA_TIME.
2.36 getSprButtonSelectScale
24
virtual float& getSprButtonSelectScale()
Source Code
Return the scale of the Selection Sprite.
2.37 getViewX
virtual float getViewX() const
Source Code
Return the x position of the view.
2.38 getViewY
virtual float getViewY() const
Source Code
Return the y position of the view.
2.39 getViewW
virtual float getViewW() const
Source Code
Return the width of the view.
2.40 getViewH
virtual float getViewH() const
Source Code
Return the height of the view.
2.41 getBgColor
virtual sf::Color& getBgColor()
Source Code
Return the background color of the scene.
2.42 inViewRec
virtual bool inViewRec(MainObject *obj, bool useTexRec = true)
Source Code
Return true if the object is in the field of vision of the view, false if not.
2.43 mouseCollision
First form
template <class T>
bool mouseCollision(T const &obj
#if defined(__ANDROID__)
25
, unsigned int finger = 0
#endif
)
Source Code
Windows, Linux : Detects if the mouse cursor collides with an object in the scene.
Android : Detects if the user touches an object in the scene.
Parameter:
obj the object with which we want to test.
finger represents the finger.
Return true if there is a collision and false if not.
Example :
if (mouseCollision(sprite))
{
// do something
}
Second form
template <class T>
bool mouseCollision(T const &obj, sf::RectangleShape &cursor
#if defined(__ANDROID__)
, unsigned int finger = 0
#endif
)
Source Code
Windows, Linux: Detects if the mouse cursor collides with an object in the scene.
Android: Detects if the user touches an object in the scene.
Parameter:
obj the object with which we want to test.
cursor allows to recover the position of the collision point.
finger represents the finger.
Return true if there is a collision and false if not.
Example :
sf::ReactangleShape rec;
if (mouseCollision(sprite, rec))
{
float cursorXPosition = rec.getPosition.x();
float cursorYPosition = rec.getPosition.y();
26
}
2.44 SDMmanageScene
virtual void SDMmanageScene()
Source Code
Allows to manage all the parts of the scene (event, update, display, dialog box).
2.45 SDMmanageSceneEvents
virtual void SDMmanageSceneEvents()
Source Code
Allows to define the way in which the SDM will manage the events of the window. To change the mechanism override
this method.
2.46 SDMmanageSceneMsgAnswers
virtual void SDMmanageSceneMsgAnswers()
Source Code
Allows to define the way in which the SDM will manage the dialog box answers. To change the mechanism override
this method.
2.47 SDMstep
virtual void SDMstep()
Source Code
Allows to update the objects that are in the SDM container.
2.48 SDMdraw
virtual void SDMdraw()
Source Code
Allows to draw the objects in the SDM container.
2.49 GSMplaySound
virtual void GSMplaySound(std::string name)
Source Code
Allows to play a sound managed by GSM.
2.50 GSMpauseSound
virtual void GSMpauseSound(std::string name)
Source Code
Allows to pause a sound managed by GSM.
2.51 GSMplayMusic
27
virtual void GSMplayMusic(std::string name)
Source Code
Allows to play a music managed by GSM.
2.52 GSMpauseMusic
virtual void GSMpauseMusic(std::string name)
Source Code
Allows to pause a music managed by GSM.
3. Protected elements
3.1 enum MsgAnswer
enum MsgAnswer;
Enumerator
YES
Response Yes
NO
Response No
Source Code
Represents the responses that the user can choose from the dialog box.
3.2 controlEventFocusClosing
void controlEventFocusClosing()
Source Code
Handles focus and window closing events. Used in an event loop!
3.3 showMessageBox
template<class T>
void showMessageBox(T const &msgBody, bool mbYesNo = true)
Source Code
Define parameter and displays the dialog box.
Parameter:
msgBody the message that will be displayed to the user.
mbYesNo true displays a YES NO dialog box and false displays just an OK button.
3.4 updateMsgBox
void updateMsgBox(float const &DELTA_TIME, sf::Color textDefaultColor = sf::Color::White, sf::Color textSelectedColor
= sf::Color::Red)
Source Code
Updates the information in the dialog box.
Parameter :
28
textDefaultColor message text color.
textSelectedColor button text color.
3.5 updateTimeWait
void updateTimeWait(float const &DELTA_TIME)
Source Code
Updates the counter which allows the user to wait after choosing an option. This avoids the choices in loops.
3.6 drawMsgBox
void drawMsgBox()
Source Code
Displays the dialog box.
SDM (Step and Draw Manager)
1. class SDM
class SDM;
Header : isEngine/system/display/SDM.h
Source Code
Parent class that allows a scene to use the functions that automatically update and display the objects of a scene. It also
allows to manage the display depth of objects.
2. Publics elements of SDM
2.1 m_SDMsceneObjects
std::vector<std::shared_ptr<MainObject>> m_SDMsceneObjects
Source Code
Container which allows to store the objects (derived from MainObject class) of the scene which will be managed by the
SDM.
2.2 SDMgetObject
MainObject* SDMgetObject(std::string name)
Source Code
Return an object which is in the container according to its name.
Exemple :
auto player = SDMgetObject("Player");
player->setX(777.f);
2.3 SDMaddSceneObject
template <class T>
29
void SDMaddSceneObject(std::shared_ptr<T> obj, bool callStepFunction = true, bool callDrawFunction = true,
std::string name = "null")
Source Code
Allows to add an object to the container.
Parameter :
obj the object to add.
callStepFunction lets know if the SDM should update the object.
callDrawFunction lets know if the SDM should draw the object.
name allows to give a name to the object during the addition.
2.4 SDMaddSprite
virtual void SDMaddSprite(sf::Sprite &spr, std::string name, int depth = DepthObject::NORMAL_DEPTH)
Source Code
Allows you to add a SFML Sprite in the container. It will not be part of the objects to be updated but of those that will be
displayed. The Sprite will be associated with a MainObject object.
2.5 SDMsetObjDepth
virtual void SDMsetObjDepth(std::string name, int depth)
Code Source
Allows to define the display depth of an object.
Game Sound
1. class GameSound
class GameSound;
Header : isEngine/system/sound/GameSound.h
Source Code
Class that allows to use sounds in the game.
2. Publics elements of GameSound
2.1 GameSound
GameSound(std::string soundName, std::string filePath)
Source Code
Constructor that allows to load a sound and give it a name.
2.2 loadResources
void loadResources(std::string filePath)
Source Code
30
Allows to load the sound.
2.3 getSoundBuffer
sf::SoundBuffer& getSoundBuffer()
Source Code
Return Sound Buffer object.
2.4 getSound
sf::Sound& getSound()
Source Code
Return Sound object.
Game Music
1. class GameMusic
class GameMusic;
Header : isEngine/system/sound/GameMusic.h
Source Code
Class that allows to use musics in the game.
2. Publics elements of GameMusic
2.1 GameMusic
GameMusic(std::string musicName, std::string filePath)
Source Code
Constructor that allows to load a music and give it a name.
2.2 loadResources
void loadResources(std::string filePath)
Source Code
Allows to load the music.
2.3 getMusic
sf::Music& getMusic()
Source Code
Return Music object.
GSM (Game Sound System)
31
1. class GSM
class GSM;
Header : isEngine/system/sound/GSM.h
Source Code
Parent class that allows a scene to add and use sounds / musics without initializing SFML objects.
2. Publics elements of GSM
2.1 GSM Containers
std::vector<std::shared_ptr<GameSound>> m_GSMsound
std::vector<std::shared_ptr<GameMusic>> m_GSMmusic
Source Code
Container which allows to store the sounds / musics of the scene which will be managed by the GSM.
2.2 GSMaddSound
virtual void GSMaddSound(std::string filePath, std::string name)
Source Code
Allows to add a sound to the container.
Parameter :
name sound name.
filePath sound file path.
2.3 GSMaddMusic
virtual void GSMaddMusic(std::string filePath, std::string name)
Source Code
Allows to add a music to the container.
Parameter :
name music name.
filePath music file path.
2.4 GSMgetSound
virtual sf::Sound* GSMgetSound(std::string name)
Source Code
Return a sound that is in the container according to its name.
2.5 GSMgetMusic
virtual sf::Music* GSMgetMusic(std::string name)
Source Code
32
Return a music that is in the container according to its name.
Entities
1. class MainObject
class MainObject;
Header: isEngine/system/entity/MainObject.h
Source Code
Basic class to create the objects (Character, Tiles, Button, etc) that will be used in the scenes. It offers you functions
which allow you to control an object (displacements, detections of collision between objects, calculation of distance,
etc) and many other things which are linked to the game play of the game.
2. Publics elements of MainObjet
2.1 MainObject
First form
MainObject()
Source Code
Default constructor of the class.
Second form
MainObject(float x, float y)
Source Code
Constructor that initializes the object with a starting point.
Third form
MainObject(sf::Sprite &spr, float x = 0.f, float y = 0.f)
Source Code
Constructor that initializes the object with a Sprite and a starting point.
2.2 instanceNumber
static int instanceNumber;
Source Code
Return the number of instances of the class.
2.3 m_SDMcallStep
bool m_SDMcallStep
Source Code
Lets know if SDM can use the object's step() (update) method.
2.4 m_SDMcallDraw
33
bool m_SDMcallDraw
Source Code
Lets know if SDM can use the object's draw() method.
2.5 setXStart
virtual void setXStart(float x)
Source Code
Defines the starting position x.
2.6 setYStart
virtual void setYStart(float y)
Source Code
Defines the starting position y.
2.7 setXPrevious
virtual void setXPrevious(float x)
Source Code
Defines the previous position x.
2.8 setYPrevious
virtual void setYPrevious(float y)
Source Code
Defines the previous position y.
2.9 setStartPosition
virtual void setStartPosition(float x, float y)
Source Code
Sets the x and y start position.
2.10 setX
virtual void setX(float x)
Source Code
Define position x.
2.11 setY
virtual void setY(float y)
Source Code
Define position y.
2.12 moveX
34
virtual void moveX(float x)
Source Code
Moves the object on the x-axis.
2.13 moveY
virtual void moveY(float y)
Source Code
Moves the object on the y-axis.
2.14 setPosition
virtual void setPosition(float x, float y)
Source Code
Set the x and y position.
2.15 setSpriteScale
virtual void setSpriteScale(float x, float y)
Source Code
Set the x and y scale of the object sprite.
2.16 setSpeed
virtual void setSpeed(float val)
Source Code
Set the speed of the object.
2.17 setHsp
virtual void setHsp(float val)
Source Code
Set horizontal speed.
2.18 setVsp
virtual void setVsp(float val)
Source Code
Set vertical speed.
2.19 setAngularMove
virtual void setAngularMove(float const &DELTA_TIME, float speed, float angle)
Source Code
Allows to move the object according to an angle and a speed.
2.20 setImageXscale
35
virtual void setImageXscale(float val)
Source Code
Set the x scale of the object.
2.21 setImageYscale
virtual void setImageYscale(float val)
Source Code
Set the y scale of the object.
2.22 setImageScale
virtual void setImageScale(float val)
Source Code
Set the x and y scale of the object with the same value.
2.23 setImageAngle
virtual void setImageAngle(float val)
Source Code
Set the angle of the object.
2.24 setXOffset
virtual void setXOffset(float val)
Source Code
Define the x offset of the object.
2.25 setYOffset
virtual void setYOffset(float val)
Source Code
Define the y offset of the object.
2.26 setXYOffset
virtual void setXYOffset()
Source Code
Defines the offset x and y of the object with the same value.
2.27 setTime
void setTime(float x)
Source Code
Set the value of the object's m_time variable.
2.28 setImageAlpha
36
virtual void setImageAlpha(int val)
Source Code
Set the alpha image of the object.
2.29 setImageIndex
virtual void setImageIndex(int val)
Source Code
Define the sub image of the object.
2.30 setMaskW
virtual void setMaskW(unsigned int val)
Source Code
Set the width of the object's collision mask.
2.31 setMaskH
virtual void setMaskH(unsigned int val)
Source Code
Set the height of the object's collision mask.
2.32 setIsActive
virtual void setIsActive(bool val)
Source Code
Defines the activity state of the object.
2.33 updateCollisionMask
First form :
virtual void updateCollisionMask()
Source Code
Updates the information (size, position, etc) of the collision mask.
Second form:
virtual void updateCollisionMask(int x, int y)
Source Code
Updates the position of the collision mask according to a point x and y different from that of the object.
2.34 centerCollisionMask
virtual void centerCollisionMask(int x, int y)
Source Code
Center the position of the collision mask according to a point x and y.
37
2.35 updateSprite
First form
virtual void updateSprite()
Source Code
Updates the sprite of the object with the values of the variables (alpha, scale, etc.) which are in the object.
Second form
virtual void updateSprite(float x, float y, float angle = 0.f, int alpha = 255, float xScale = 1.f, float yScale = 1.f)
Source Code
Updates the sprite of the object with external values.
2.36 draw
virtual void draw(sf::RenderTexture &surface)
Source Code
Displays the object.
2.37 drawMask
virtual void drawMask(sf::RenderTexture &surface, sf::Color color = sf::Color::Blue)
Source Code
Allows to display the collision mask that has been defined (Rectangle or Circle) for the object.
2.38 getMask
virtual is::Rectangle getMask() const
Source Code
Return the rectangle (default) collision mask.
2.39 getCircleMask
virtual is::Circle getCircleMask() const
Source Code
Return the circle collision mask.
2.40 getX
virtual float getX() const
Source Code
Return the x position of the object.
2.41 getY
virtual float getY() const
Source Code
38
Return the y position of the object.
2.42 getXStart
virtual float getXStart() const
Source Code
Return the x start position of the object.
2.43 getYStart
virtual float getYStart() const
Source Code
Return the y start position of the object.
2.44 getXPrevious
virtual float getXPrevious() const
Source Code
Return the previous position x of the object.
2.45 getYPrevious
virtual float getYPrevious() const
Source Code
Return the previous position y of the object.
2.46 distantToPoint
virtual float distantToPoint(float x, float y) const
Source Code
Return the distance between the object and a point x and y.
2.47 distantToObject
virtual float distantToObject(std::shared_ptr<MainObject> const &other, bool useSpritePosition) const
Source Code
Return the distance between the object and another.
Parameter if useSpritePosition is true we use the position of the sprite of the object to do the test if not we use the
position x, y of the object.
2.48 pointDirection
First form
virtual float pointDirection(float x, float y) const
Source Code
Return the direction (angle) of the object relative to a point.
39
Second form
virtual float pointDirection(std::shared_ptr<MainObject> const &other) const
Source Code
Return the direction (angle) of the object relative to another. Here the other object is a smart pointer.
2.49 pointDirectionSprite
First form
virtual float pointDirectionSprite(float x, float y) const
Source Code
Return the direction (angle) of the object's sprite relative to a point.
Second form
virtual float pointDirectionSprite(std::shared_ptr<MainObject> const &other) const
Source Code
Return the direction (angle) of the object's sprite relative to another.
2.50 getSpeed
virtual float getSpeed() const
Source Code
Return object speed.
2.51 getHsp
virtual float getHsp() const
Source Code
Return the horizontal speed of the object.
2.52 getVsp
virtual float getVsp() const
Source Code
Return the vertical speed of the object
2.53 getFrame
virtual float getFrame() const
Source Code
Return the number of the sub-image that is being displayed.
2.54 getFrameStart
virtual float getFrameStart() const
Source Code
40
Return the number of the start sub picture.
2.55 getFrameEnd
virtual float getFrameEnd() const
Source Code
Return the number of the end sub picture.
2.56 getImageXscale
virtual float getImageXscale() const
Source Code
Return the object's x-scale.
2.57 getImageYscale
virtual float getImageYscale() const
Source Code
Return the object's y-scale.
2.58 getImageScale
virtual float getImageScale() const
Source Code
Return the object's scale.
2.59 getImageAngle
virtual float getImageAngle() const
Source Code
Return the angle of the object image.
2.60 getXOffset
virtual float getXOffset() const
Source Code
Return the object x offset.
2.61 getYOffset
virtual float getYOffset() const
Source Code
Return the object y offset.
2.62 getTime
virtual float getTime() const
Source Code
41
Return the value of the variable m_time.
2.63 getInstanceId
virtual int getInstanceId() const
Source Code
Return the object number.
2.64 getMaskW
virtual unsigned int getMaskW() const
Source Code
Return the width of the collision mask.
2.65 getMaskH
virtual unsigned int getMaskH() const
Source Code
Return the height of the collision mask.
2.66 getIsActive
virtual bool getIsActive() const
Source Code
Return the state of the object.
2.67 getImageAlpha
virtual int getImageAlpha() const
Source Code
Return the alpha image of the object.
2.68 getImageIndex
virtual int getImageIndex() const
Source Code
Return the image index.
2.69 getSpriteWidth
virtual int getSpriteWidth() const
Source Code
Return the width of the sprite.
2.70 getSpriteHeight
virtual int getSpriteHeight() const
Source Code
42
Return the height of the sprite.
2.71 getSpriteX
virtual float getSpriteX() const
Source Code
Return the x position of the sprite.
2.72 getSpriteY
virtual float getSpriteY() const
Source Code
Return the y position of the sprite.
2.73 getSpriteCenterX
virtual int getSpriteCenterX() const
Source Code
Return the x center of the sprite.
2.74 getSpriteCenterY
virtual int getSpriteCenterY() const
Source Code
Return the y center of the sprite.
2.75 placeMetting
First form
virtual bool placeMetting(int x, int y, MainObject const *other)
Source Code
Return true if there is a collision with another object, false if not.
Second form
virtual bool placeMetting(int x, int y, std::shared_ptr<MainObject> const &other)
Source Code
Return true if there is a collision with another object, false if not. Here the other object is a smart pointer.
2.76 getSprite
virtual sf::Sprite& getSprite()
Source Code
Return the object sprite.
2.77 setFrame
virtual void setFrame(float frameStart, float frameEnd = -1.f)
43
Source Code
Defines the start and end image which will be used to animate the sprite of the object.
3. Other functions of MainObject
3.1 instanceExist
First form
template<class T>
bool instanceExist(std::shared_ptr<T> const &obj)
Source Code
Return true if the instance exists, false if not.
Second form
template<class T>
bool instanceExist(T const *obj)
Source Code
Return true if the instance exists, false if not.
3.2 operator()
Position comparator
class CompareX;
Source Code
Functor which is used to sort the objects compared to their position x.
bool operator()(std::shared_ptr<MainObject> const &a, std::shared_ptr<MainObject> const &b) const
Source Code
Used to sort objects according to their x positions.
Depth comparator
class CompareDepth;
Source Code
Functor which is used to sort objects according to their depth.
bool operator()(std::shared_ptr<MainObject> const &a, std::shared_ptr<MainObject> const &b) const
Source Code
Used to sort objects according to their depths.
3.3 sortObjArrayByX
template<class T>
void sortObjArrayByX(std::list<std::shared_ptr<T>> &v)
Source Code
44
Sort an array (std::list) of objects by x position.
3.4 sortObjArrayByDepth
template<class T>
void sortObjArrayByDepth(std::list<std::shared_ptr<T>> &v)
Source Code
Sort an array (std::list) of objects by depth.
3.5 operator>
bool operator<(std::shared_ptr<MainObject> const &a, const MainObject &b)
Source Code
Return true if the position of object A is greater than that of B, false if not.
3.6 operator<
bool operator<(const MainObject &b, std::shared_ptr<MainObject> const &a)
Source Code
Return true if the position of object A is less than that of B, false if not.
Forms for collision masks
Header : isEngine/system/entity/Form.h
1. class Rectangle
class Rectangle;
Source Code
Represents the rectangle collision mask. These members m_left, m_top, m_right, m_bottom allows to define the size of
the mask.
2. class Circle
class Circle;
Source Code
Represents the circle collision mask. These members m_x, m_y, m_raduis allows to define the position and raduis of
the circle.
Circle()
Source Code
Default constructor.
The Parent Classes of MainObject
45
1. class DepthObject
class DepthObject;
Header : isEngine/system/entity/parents/DephObject.h
Source Code
Class that provides methods for managing the display depth of objects in a scene.
1.1 enum Depth
enum Depth;
Enumerator
VERY_BIG_DEPTH
Very big depth
BIG_DEPTH
Big depth
NORMAL_DEPTH
Normal depth
SMALL_DEPTH
Small depth
VERY_SMALL_DEPTH
Very small depth
Source Code
Represents the depth level of an object.
1.2 DepthObject
DepthObject(int Depth)
Source Code
Constructor to define a depth.
1.3 setDepth
virtual void setDepth(int val)
Source Code
Set the depth of the object.
1.4 getDepth
virtual int getDepth() const
Source Code
Return the depth of the object.
2. class Destructible
class Destructible;
Header : isEngine/system/entity/parents/Destructible.h
Source Code
Class that offers methods to manage the destruction of an object.
2.1 Destructible
Destructible()
46
Source Code
Default constructor.
2.2 setDestroyed
virtual void setDestroyed()
Source Code
Starts the destruction of an object.
2.3 isDestroyed
virtual bool isDestroyed() const
Source Code
Return the state of the object.
3. class Visibility
class Visibility;
Header : isEngine/system/entity/parents/Visibility.h
Source Code
Class that offers methods to manage the visibility of an object.
3.1 Visibility
explicit Visibility(bool defaultVisibility = true)
Source Code
Class constructor.
3.2 setVisible
void setVisible(bool value)
Source Code
Set the visibility of the object.
3.3 getVisible
bool getVisible() const
Source Code
Return the state of the object.
4. class Health
class Health;
Header : isEngine/system/entity/parents/Health.h
Source Code
Class that provides methods for managing the health of an object.
47
4.1 Health
First form
Health(int health)
Source Code
Constructor of the class takes as a parameter the health to be attributed to the object. Here the maximum health value is
equal to the defined health.
Second form
Health(int health, int maxHealth)
Source Code
Class constructor takes as a parameter the health to be assigned to the object and the maximum value.
4.2 setHealth
virtual void setHealth(int val)
Source Code
Define the health of the object.
4.3 setMaxHealth
virtual void setMaxHealth(int val)
Source Code
Defines the maximum health (the limit not to be exceeded) of the object.
4.4 addHealth
virtual void addHealth(int val = 1)
Source Code
Add health to the object. Can also be used to retake it if you put a negative value.
4.5 getHealth
virtual int getHealth() const
Source Code
Return the health of the object.
4.6 getMaxHealth
virtual int getMaxHealth() const
Source Code
Return the maximum health (the limit not to be exceeded) of the object.
5. class HurtEffect
class HurtEffect;
48
Header : isEngine/system/entity/parents/HurtEffect.h
Source Code
Class that offers methods to make an invulnerability effect on an object. That is, make the object blink for a certain time
(e.g. when the player is attacked by an enemy he becomes invulnerable by blinking for a limited time).
5.1 HurtEffect
HurtEffect(sf::Sprite &sprParent) :
Source Code
Class constructor takes as parameter the sprite on which the invulnerability effect will be effected.
5.2 hurtStep
void hurtStep(float const &DELTA_TIME)
Source Code
Allows to make the invulnerability animation.
5.3 setIsHurt
void setIsHurt(float durration = 100.f)
Source Code
Defines the duration (in millisecond) of the object's invulnerability.
5.4 getIsHurt
bool getIsHurt() const
Source Code
Return true if the object is invulnerable, false if not.
6. class ScorePoint
class ScorePoint;
Header : isEngine/system/entity/parents/ScorePoint.h
Source Code
Class that offers methods for managing the score to be assigned to an object (e.g. each enemy has a particular score
point when it is created which is added to the player's overall score when he is defeated).
6.1 ScorePoint
explicit ScorePoint(int point = 0)
Source Code
Class constructor, takes as a parameter the point to assign to the object.
6.2 setScorePoint
virtual void setScorePoint(int point)
Source Code
49
Set object score point.
6.3 getScorePoint
virtual int getScorePoint() const
Source Code
Return the score point assigned to the object.
7. class Step
class Step;
Header : isEngine/system/entity/parents/Step.h
Class that offers methods to manage the different steps of an object (e.g. to take off a rocket you have to go through
several steps).
7.1 Step
explicit Step(int step = 0)
Source Code
Class constructor.
7.2 setStep
virtual void setStep(int val)
Source Code
Defines the step of the object.
7.3 addStep
virtual void addStep()
Source Code
Advance the object step.
7.4 reduceStep
virtual void reduceStep()
Source Code
Reduce the object step.
7.5 getStep
virtual int getStep() const
Source Code
Return the step at which the object is.
8. class Name
class Name;
50
Header : isEngine/system/entity/parents/Name.h
Parent class that provides methods for managing the name of an object.
8.1 Name
explicit Name(std::string name = "Unknown")
Source Code
Constructor used to define the name of the object.
8.2 setName
void setName(std::string soundName)
Source Code
Allows to define the name of the object.
8.3 getName
std::string getName() const
Source Code
Return the name of the object.
9. class FilePath
class FilePath;
Header : isEngine/system/entity/parents/FilePath.h
Parent class that provides methods for managing the path of a file.
9.1 FilePath
FilePath(std::string filePath)
Source Code
Constructor of the class, it takes as parameter the path of the file to load.
9.2 setFilePath
void setFilePath(std::string filePath)
Source Code
Allows to define the file path.
9.3 getFilePath
std::string getFilePath() const
Source Code
Return file path.
9.4 getFileIsLoaded
bool getFileIsLoaded() const
51
Source Code
Return true when the file has been loaded false otherwise.
The Backgroud
1. class Background
class Background;
Header : isEngine/system/entity/Background.h
Source Code
This Class allows to draw a Sprite as a background, with the possibility of using it to fill a scene and to scroll it with
horizontal and vertical speed.
2. Public methods
2.1 Background
Background(sf::Texture &tex, float x, float y, is::GameDisplay *scene, float hSpeed = 0.f, float vSpeed = 0.f,
bool fillHorizontal = true, bool fillVertical = true)
Source Code
Constructor of the class, it takes as parameters the texture, the position, the scene, the horizontal and vertical scrolling
speed and the two other parameters which are used to make horizontal and vertical filling.
2.2 step
void step(float const &DELTA_TIME)
Source Code
Allows to update the object.
Admob
1. class AdmobManager
class AdmobManager;
Header: isEngine/system/android/AdmobManager.h
Source Code
Class that allows you to use the Admob SDK in the game. It offers functions to manage banner and reward video ads.
2. Public methods
2.1 AdmobManager
AdmobManager(sf::RenderWindow &window, ANativeActivity* activity, JNIEnv* env, JavaVM* vm)
Source Code
Class constructor, it takes the window, Android activity and the virtual machine as parameters.
52
2.2 loadBannerAd
void loadBannerAd()
Source Code
Request for banner ad.
2.3 showBannerAd
void showBannerAd()
Source Code
Displays a banner ad provided the request has been successfully executed.
2.4 hideBannerAd
void hideBannerAd()
Source Code
Hide the banner ad.
2.5 loadRewardVideo
void loadRewardVideo()
Source Code
Request a reward video ad.
2.6 updateSFMLApp
auto updateSFMLApp(bool whiteColor)
Source Code
Updates the SFML application in the background when an ad is displayed. This avoids the main program crashing.
2.7 checkAdObjInit
void checkAdObjInit()
Source Code
Ensures the initialization of Admob components.
2.8 checkAdRewardObjReinitialize
void checkAdRewardObjReinitialize()
Source Code
Reset Admob components.
3. Other Functions of AdmobManager
3.1 ProcessEvents & WaitForFutureCompletion
static bool ProcessEvents(int msec)
static void WaitForFutureCompletion(firebase::FutureBase future)
53
Source Code
Ensures the proper functioning of tests on ad components.
3.2 checkAdState
static bool checkAdState(firebase::FutureBase future)
Source Code
Return true if the test on the ad component was successful, false if not.
Time
1. class GameTime
class GameTime;
Header: isEngine/system/function/GameTime.h
Source Code
This Class allows you to manipulate the game time (the stopwatch). Very useful for platform games like Super Mario
Bros or Sonic which uses a stopwatch in a level.
2. Public methods of GameTime
2.1 GameTime
First form
GameTime()
Source Code
Default constructor, initializes all counters (minute, second, millisecond) to zero (0).
Second form
GameTime(unsigned int ms)
Source Code
Constructor to initialize time with milliseconds which will be distributed later in minutes and seconds.
Third form
GameTime(unsigned int m, unsigned int s, unsigned int ms = 0)
Source Code
Constructor to initialize time with minutes, seconds and milliseconds.
2.2 step
void step(float const &DELTA_TIME, float const &VALUE_CONVERSION, float const &VALUE_TIME)
Source Code
Start the countdown timer so that it stops at zero (0).
2.3 addTimeValue
54
void addTimeValue(int m, int s = 0, int ms = 0)
Source Code
Add minutes, seconds and milliseconds to the current time.
2.4 setTimeValue
void setTimeValue(int m, int s = 0, int ms = 0)
Source Code
Set a new minute, second and millisecond for the current time.
2.5 setMSecond
void setMSecond(int ms)
Source Code
Set milliseconds which will be distributed in minutes and seconds.
2.6 getTimeString
std::string getTimeString() const
Source Code
Return current time as a string (example 00: 00.00).
2.7 getTimeValue
unsigned int getTimeValue() const
Source Code
Return time in milliseconds.
2.8 getMinute
unsigned int getMinute() const
Source Code
Return the minute.
2.9 getSecond
unsigned int getSecond() const
Source Code
Return the second.
2.10 getMSecond
unsigned int getMSecond() const
Source Code
Return the millisecond.
2.11 compareTime
55
bool compareTime(unsigned int m, unsigned int s = 0, unsigned int ms = 0) const
Source Code
Compare the entered time and the time of the object.
Return true if the time entered is greater than the time of the object false if not.
2.12 operator=
GameTime& operator=(GameTime const &t)
Source Code
Equality operator to compare two objects.
2.13 operator<<
friend std::ostream& operator<<(std::ostream &flux, GameTime const &t)
Source Code
Operator to display the time with the std::cout.
3. Other functions of GameTime
bool operator==(GameTime const &t1, GameTime const &t2)
bool operator>(GameTime const &t1, GameTime const &t2)
bool operator<(GameTime const &t1, GameTime const &t2)
Source Code
These Operators allow you to make comparisons with objects.
Game control
class GameKeyData
Header: isEngine/system/function/GameKeyData.h
Source Code
Class that allows to manage the controls of the game. It supports the keyboard and the mouse on PC and becomes a
Virtual Game Pad on Android.
1. Elements of GameKeyData
2.1 enum VirtualKeyIndex
enum VirtualKeyIndex;
Enumerator
V_KEY_LEFT
Represents the LEFT key
V_KEY_RIGHT
Represents the RIGHT key
V_KEY_UP
Represents the UP key
V_KEY_DOWN
Represents the DOWN key
V_KEY_A
Represents the A key
V_KEY_B
Represents the B key
56
V_KEY_NONE
No key
Source Code
Represents game controls key.
2.2 GameKeyData
GameKeyData(is::GameDisplay *scene)
Source Code
Constructor who takes the scene as a parameter.
2.3 loadResources
void loadResources(sf::Texture &tex)
Source Code
Allows to load the texture which will be used to create the keys of the Virtual Game Pad.
2.4 step
void step(float const &DELTA_TIME)
Source Code
Updates the position of the Virtual Game Pad on the screen and also detects the use of commands.
2.5 draw
void draw(sf::RenderTexture &surface)
Source Code
Displays the Virtual Game Pad.
2.6 m_keyPausePressed
bool m_keyPausePressed
Source Code
Determines if the pause key is pressed.
2.7 m_keyLeftPressed
bool m_keyLeftPressed
Source Code
Stores the state of the LEFT key.
2.8 m_keyRightPressed
bool m_keyRightPressed
Source Code
Stores the state of the RIGHT key.
57
2.9 m_keyUpPressed
bool m_keyUpPressed
Source Code
Stores the state of the UP key.
2.10 m_keyDownPressed
bool m_keyDownPressed
Source Code
Stores the state of the DOWN key.
2.11 m_keyAPressed
bool m_keyAPressed
Source Code
Stores the state of the A key.
2.12 m_keyBPressed
bool m_keyBPressed
Source Code
Stores the state of the B key.
2.13 m_keyAUsed
bool m_keyAUsed
Source Code
Stores the state of the A key when it is used.
2.14 m_keyBUsed
bool m_keyBUsed
Source Code
Stores the state of the B key when it is used.
2.15 m_keyLeftUsed
bool m_keyLeftUsed
Source Code
Stores the state of the LEFT key when it is used.
2.16 m_keyRightUsed
bool m_keyRightUsed
Source Code
Stores the state of the RIGHT key when it is used.
58
2.17 m_keyUpUsed
bool m_keyUpUsed
Source Code
Stores the state of the UP key when it is used.
2.18 m_keyDownUsed
bool m_keyDownUsed
Source Code
Stores the state of the DOWN key when it is used.
2.19 m_disableAllKey
bool m_disableAllKey
Source Code
Disables all game controls.
2.20 m_hideGamePad
bool m_hideGamePad
Source Code
Allows to hide the Virtual Game Pad on Android.
2.21 m_keyboardA
sf::Keyboard::Key m_keyboardA
Source Code
Represents the keyboard key that serves as the A key.
2.22 m_keyboardB
sf::Keyboard::Key m_keyboardB
Source Code
Represents the keyboard key that serves as the B key.
2.23 m_keyboardLeft
sf::Keyboard::Key m_keyboardLeft
Source Code
Represents the keyboard key that serves as the LEFT key.
2.24 m_keyboardRight
sf::Keyboard::Key m_keyboardRight
Source Code
Represents the keyboard key that serves as the RIGHT key.
59
2.25 m_keyboardUp
sf::Keyboard::Key m_keyboardUp
Source Code
Represents the keyboard key that serves as the UP key.
2.26 m_keyboardDown
sf::Keyboard::Key m_keyboardDown
Source Code
Represents the keyboard key that serves as the DOWN key.
2.27 m_moveKeyPressed
VirtualKeyIndex m_moveKeyPressed
Source Code
Used to find out whether the virtual directional keys are pressed.
2.28 m_actionKeyPressed
VirtualKeyIndex m_actionKeyPressed
Source Code
Used to find out whether the virtual keys A, B are pressed.
2.29 keyLeftPressed
bool keyLeftPressed()
Source Code
Return true if the LEFT directional key is pressed, false if not.
2.30 keyRightPressed
bool keyRightPressed()
Source Code
Return true if the RIGHT directional key is pressed, false if not.
2.31 keyUpPressed
bool keyUpPressed()
Source Code
Return true if the UP directional key is pressed, false if not.
2.32 keyDownPressed
bool keyDownPressed()
Source Code
Return true if the DOWN directional key is pressed, false if not.
60
2.33 keyAPressed
bool keyAPressed()
Source Code
Return true if the key A is pressed, false if not.
2.34 keyBPressed
bool keyBPressed()
Source Code
Return true if the key B is pressed, false if not.
2.35 virtualKeyPressed
bool virtualKeyPressed(VirtualKeyIndex virtualKeyIndex)
Source Code
Return true if the corresponding virtual key is pressed, false if not.
2. Other functions of GameKeyData
These functions are found in GameKeyName.h.
Header : isEngine/system/function/GameKeyName.h
First form
inline const char *getKeyName(const sf::Keyboard::Key key)
Source Code
Return the name of the keyboard key as a string.
Second form
inline std::wstring getKeyWName(const sf::Keyboard::Key key)
Source Code
Return the name of the keyboard key as a std::wstring.
Game System
1. class GameSystem
class GameSystem;
Header : isEngine/system/function/GameSystem.h
Source Code
Base class which ensures the sharing of game information between the different components of the game engine. It
contains the global variables and functions which ensure the proper functioning of the engine.
2. Elements of GameSystem
61
2.1 enum ValidationButton
enum ValidationButton;
Enemerator
MOUSE
Represent the validation button of the mouse (if it is used, it becomes a touch action on
Android)
KEYBOARD
Represent the validation key on the keyboard
ALL_BUTTONS
Represent the validation button of the mouse and the keyboard (if it is used, it becomes a
touch action on Android)
Source Code
Represents the validation key on PC, It lets you know the button that will be used during a validation test.
2.2 GameSystem
GameSystem()
Source Code
Default constructor.
2.3 isPressed
bool isPressed(
#if defined(__ANDROID__)
int finger = 0
#else
ValidationButton validationButton = ALL_BUTTONS
#endif
) const
Source Code
Windows, Linux:
Checks if the validation key is pressed.
The validation key is defined in GameConfig.h (See here: 3.1).
Android :
Check if the screen is touched by the user.
Parameter :
finger finger index (on Android).
validationButton Represents the validation button to be used to perform the test.
Example:
Check if the validation key of the keyboard is pressed, by default this key is ENTER.
if (m_gameSystem.isPressed(is::GameSystem::ValidationButton::KEYBOARD))
62
{
// do something
}
Check if the validation button of the mouse is pressed, by default this button is LEFT.
if (m_gameSystem.isPressed(is::GameSystem::ValidationButton::MOUSE)
{
// do something
}
2.4 keyIsPressed
First form
bool keyIsPressed(sf::Keyboard::Key key) const
Source Code
Check if the keyboard key is pressed.
Return true if the key is pressed, false if not.
Second form
bool keyIsPressed(sf::Mouse::Button button) const
Source Code
Check if the mouse button is pressed.
Return true if the button is pressed, false if not.
2.5 fileExist
bool fileExist(std::string const &fileName) const
Source Code
Return true if the file exists, false if not.
2.6 playSound
void playSound(sf::Sound &obj)
Source Code
Allows to play a sound if the option is activated.
2.7 playMusic
void playSound(sf::Music &obj)
Source Code
Allows to play a music if the option is activated.
2.8 stopSound
void stopMusic(sf::Sound &obj)
Source Code
Allows to stop a sound.
63
2.9 stopMusic
void stopSound(sf::Music &obj)
Source Code
Allows to stop a music.
2.10 useVibrate
void useVibrate(short ms)
Source Code
Allows to use the vibrator if this option is activated (only for Android).
Parameter ms represents the duration of the vibrator in milliseconds.
2.11 saveConfig
void saveConfig(std::string const &fileName)
Source Code
Save game configuration data.
2.12 loadConfig
void loadConfig(std::string const &fileName)
Source Code
Load game configuration data.
2.13 savePadConfig
void savePadConfig(std::string const &fileName)
Source Code
Save the configuration data of the Virtual Game Pad.
2.14 loadPadConfig
void loadPadConfig(std::string const &fileName)
Source Code
Load the configuration data of the Virtual Game Pad.
2.15 m_disableKey
bool m_disableKey
Source Code
If it is true all the engine functions that manage the inputs (keyboard, mouse, touch) are disabled.
2.16 m_enableSound
bool m_enableSound
Source Code
64
Used to find out if the sound is activated.
2.17 m_enableMusic
bool m_enableMusic
Source Code
Used to find out if the music is activated.
2.18 m_enableVibrate
bool m_enableVibrate
Source Code
Used to find out if the vibrator is activated (only for Android).
2.19 m_keyIsPressed
bool m_keyIsPressed
Source Code
Used to find out if a key / button has been pressed.
2.20 m_firstLaunch
bool m_firstLaunch
Source Code
Check if the game has been launched at least once.
2.21 m_validationMouseKey
sf::Mouse::Button m_validationMouseKey
Source Code
Represent the variable that stores the validation button of the mouse.
2.22 m_validationKeyboardKey
sf::Keyboard::Key m_validationKeyboardKey
Source Code
Represents the variable that stores the keyboard validation key.
2.23 m_gameLanguage
int m_gameLanguage
Source Code
Represents the index of the chosen language.
2.24 m_padAlpha
int m_padAlpha
Source Code
65
Allows to modify the transparency of the Virtual Game Pad.
Game System Extended
1. class GameSystemExtended
class GameSystemExtended;
Header : app_src/gamesystem_ext/GameSystemExtended.h
Source Code
Class derived from GameSystem (click here for more information: 1), it performs the same role as its parent. Its
particularity is that it contains new elements which will be used to manage the game play and to manipulate the
different game scenes.
2. Elements of GameSystemExtended
2.1 GameSystemExtended
GameSystemExtended()
Source Code
Default constructor.
2.2 initSystemData
void initSystemData()
Source Code
Initializes the data linked to the game engine.
2.3 initProgress
void initProgress()
Source Code
Initialize game progress data.
2.4 initData
void initData(bool clearCurrentLevel = true)
Source Code
Initializes the game play data (score, life, etc.).
2.5 saveData
void saveData(std::string const &fileName)
Source Code
Save game data.
2.6 loadData
void loadData(std::string const &fileName)
66
Source Code
Load game data.
2.7 m_launchOption
DisplayOption m_launchOption
Source Code
Determine the action (click here to see the actions: 1) that will be performed on the different scenes of the game.
2.8 game play variables
int m_gameProgression
int m_levelNumber
int m_currentLevel
int m_currentLives
int m_currentBonus
int m_currentScore
int m_levelTime
Source Code
Global game variables.
Game Function
Header : isEngine/system/function/GameFunction.h
These functions allow you to do conversions on strings, manipulate time, manipulate SFML objects, display special
texts, use certain Android functions, perform geometric calculations, perform tests on variables, use functions to
manipulate random values, etc.
1. General Function
1.1 VALUE_CONVERSION
static float const VALUE_CONVERSION(65.f);
Source Code
Acts on the timing of counters.
Example:
This creates a counter in milliseconds when we put it in the update loop
// msCpt is an integer variable
msCpt += (is::VALUE_CONVERSION * 1.538f) * DELTA_TIME; // DELTA_TIME is the execution time returned by the
machine
1.2 WITH
#define WITH(_SIZE)
Source Code
Allows to browse a vector array. _I is the counter.
67
Example:
WITH(vectoreArray.size())
{
vectoreArray[_I]->function(…);
}
1.3 w_chart_tToStr
std::string w_chart_tToStr(wchar_t const *str)
Source Code
Convert w_chart_t to std::string.
1.4 strToWStr
std::wstring strToWStr(const std::string &str)
Source Code
Convert std::string to std::wstring.
1.5 numToStr
template <class T>
std::string numToStr(T val)
Source Code
Convert numeric to std::string.
1.6 strToNum
template <typename T>
T strToNum(const std::string &str)
Source Code
Convert std::string to numeric.
1.7 numToWStr
template <class T>
std::wstring numToWStr(T val)
Source Code
Convert numeric to std::wstring.
1.8 writeZero
template <class T>
std::string writeZero(T val, int zeroNumber = 1)
Source Code
Draw zeros in front of a number.
68
Parameter zeroNumber represents the number of zero to display.
Example:
int var(7);
std::cout << is::writeZero(var, 2) << std::endl; // its display in the console “007”
1.9 getMSecond
int getMSecond(float const &DELTA_TIME)
Source Code
Return execution time in milliseconds.
1.10 showLog
void showLog(std::string str , bool stopApplication = false)
Source Code
Displays messages in the console. If stopApplication is true it stops the application.
1.11 arraySize
template <size_t SIZE, class T>
inline size_t arraySize(T (&arr)[SIZE])
Source Code
Return the size of an array.
1.12 choose
template <typename T>
T choose(unsigned short valNumber, T x1, T x2, T x3 = 0, T x4 = 0, T x5 = 0, T x6 = 0, T x7 = 0, T x8 = 0, T x9 = 0)
Source Code
Selects a value randomly.
Parameter valNumber the number of values to test.
Example:
std::cout << is:: choose(3, 7, 12, 4) << std::endl; // its display in the console randomly 7 or 12 or 4
1.13 setVarLimit
template <typename T>
void setVarLimit(T &var, T valMin, T valMax)
Source Code
Allows to frame a value.
69
1.14 isIn
bool isIn(unsigned short valNumber, int const var, int x1, int x2, int x3 = 0, int x4 = 0, int x5 = 0, int x6 = 0, int x7 = 0, int
x8 = 0, int x9 = 0)
Source Code
Check if the value of a variable is in a value set.
Example:
int year(2020);
if (is::isIn(3, year, 2020, 2012, 2000)) // this condition will be true because the value of year is found in the function
{
// do something
}
1.15 isBetween
bool isBetween(float a, float b, float c)
Source Code
Check if a value is in an interval.
1.16 isCrossing
bool isCrossing(float l1, float r1, float l2, float r2)
Source Code
Checks if the point intersects another.
1.17 side
int side(Point m, Point a,Point b)
Source Code
Return -1 to the left, 1 to the right, 0 if a b c are aligned.
1.18 sign
int sign(float x)
Source Code
Return the sign of value.
1.19 pointDirection
template <typename T>
T pointDirection(float x1, float y1, float x2, float y2)
Source Code
Determine the angle between two points.
1.20 pointDistance
float pointDistance(float x1, float y1, float x2, float y2)
70
Source Code
Determine the distance between two points.
1.21 radToDeg
float radToDeg(float x)
Source Code
Convert radiant to degree.
1.22 degToRad
float degToRad(float x)
Source Code
Convert degree to radian.
1.23 lengthDirX
float lengthDirX(float dir, float angle)
Source Code
Return the component of x.
1.24 lengthDirY
float lengthDirY(float dir, float angle)
Source Code
Return the component of y.
1.25 increaseVar
template <typename T>
void increaseVar(const float &DELTA_TIME, T &var, T increaseValue, T varFinal, T varMax)
Source Code
Increment a variable with execution time.
Example:
int var(0);
is::increaseVar(DELTA_TIME, var, 1, 15, 10)); // the variable “var” will increment with the value 1. If it is
// greater than 10 it becomes 15 and the increment stops
1.26 decreaseVar
template <typename T>
void decreaseVar(const float &DELTA_TIME, T &var, T decreaseValue, T varFinal = 0, T varMin = 0)
Source Code
Decrement a variable with execution time.
Example:
71
int var(40);
is::decreaseVar(DELTA_TIME, var, 1, 20, 25)); // the variable “var” will decrement with the value 1. If it is
// less than 25 it becomes 20 and the decrement stops
1.27 collisionTest
bool collisionTest(Rectangle const &a, Rectangle const &b)
bool collisionTest(Circle const &a, Circle const &b)
bool collisionTest(Circle const &circle, Rectangle const &rec)
bool collisionTest(Rectangle const &rec, Circle const &circle)
Source Code
Test the collision between the Rectangle and Circle collision mask.
2. Function on objects SFML
2.1 getSFMLObjAngle
template <class T>
float getSFMLObjAngle(T obj)
Source Code
Return the angle of the object.
2.2 getSFMLObjXScale
template <class T>
float getSFMLObjXScale(T obj)
Source Code
Return the x-scale of the object.
2.3 getSFMLObjYScale
template <class T>
float getSFMLObjYScale(T obj)
Source Code
Return the y-scale of the object.
2.4 getSFMLObjWidth
template <class T>
float getSFMLObjWidth(T obj)
Source Code
Return the width of the object.
2.5 getSFMLObjHeight
template <class T>
72
float getSFMLObjHeight(T obj)
Source Code
Return the height of the object.
2.6 getSFMLObjOriginX
template <class T>
float getSFMLObjOriginX(T obj)
Source Code
Return the origin x.
2.7 getSFMLObjOriginY
template <class T>
float getSFMLObjOriginY(T obj)
Source Code
Return the origin y.
2.8 getSFMLObjX
First form
template <class T>
float getSFMLObjX(T obj)
Second form
template <class T>
float getSFMLObjX(T *obj)
Source Code
Return position x.
2.9 getSFMLObjY
First form
template <class T>
float getSFMLObjY(T obj)
Second form
template <class T>
float getSFMLObjY(T *obj)
Source Code
Return position y.
2.10 setSFMLObjAngle
73
template <class T>
void setSFMLObjAngle(T &obj, float angle)
Source Code
Set the angle.
2.11 setSFMLObjRotate
template <class T>
void setSFMLObjRotate(T &obj, float rotationSpeed)
Source Code
Set the rotation of the object.
2.12 setSFMLObjScaleX_Y
template <class T>
void setSFMLObjScaleX_Y(T &obj, float x, float y)
Source Code
Define the scale x and y.
2.13 setSFMLObjScale
template <class T>
void setSFMLObjScale(T &obj, float scale)
Source Code
Set the scale x and y with the same value.
2.14 setSFMLObjOrigin
template <class T>
void setSFMLObjOrigin(T &obj, float x, float y)
Source Code
Set the origin x and y.
2.15 setSFMLObjX
template <class T>
void setSFMLObjX(T &obj, float x)
Source Code
Defines the position x.
2.16 setSFMLObjY
template <class T>
void setSFMLObjY(T &obj, float y)
74
Source Code
Defines the position y.
2.17 centerSFMLObj
template <class T>
void centerSFMLObj(T &obj)
Source Code
Center the object in x and y.
2.18 centerSFMLObjX
template <class T>
void centerSFMLObjX(T &obj)
Source Code
Center the object in x.
2.19 centerSFMLObjY
template <class T>
void centerSFMLObjY(T &obj)
Source Code
Center the object in y.
2.20 setSFMLObjX_Y
First form
template <class T>
void setSFMLObjX_Y(T &obj, sf::Vector2f position)
Second form
template <class T>
void setSFMLObjX_Y(T &obj, float x, float y)
Source Code
Defines the position x and y.
2.21 moveSFMLObjX
template <class T>
void moveSFMLObjY(T &obj, float speed)
Source Code
Moves the SFML object on the x-axis.
2.22 moveSFMLObjY
75
template <class T>
void moveSFMLObjY(T &obj, float speed)
Source Code
Moves the SFML object on the y-axis.
2.23 setSFMLObjSize
First form
template <class T>
void setSFMLObjSize(T &obj, float x, float y)
Second form
template <class T>
void setSFMLObjSize(T &obj, sf::Vector2f v)
Source Code
Set the size of the object.
2.24 setSFMLObjAlpha
First form
template <class T>
void setSFMLObjAlpha(T &obj, unsigned int alpha)
Second form
template <class T>
void setSFMLObjAlpha(T &obj, unsigned int alpha, sf::Uint8 r, sf::Uint8 g, sf::Uint8 b)
Third form
template <class T>
void setSFMLObjAlpha(T &obj, unsigned int alpha, sf::Uint8 rgb)
Source Code
Set transparency. Can generate WARNINGS if used on texts and geometric shapes!
2.25 setSFMLObjAlpha2
template <class T>
void setSFMLObjAlpha2(T &obj, unsigned int alpha)
Source Code
Defines transparency for text, rectangles, etc. Does not work for sprites!
2.26 setSFMLObjColor
template <class T>
76
void setSFMLObjColor(T &obj, sf::Color color)
Source Code
Set the color of the object (Sprite).
2.27 setSFMLObjFillColor
template <class T>
void setSFMLObjFillColor(T &obj, sf::Color color)
Source Code
Defines the color of the object (Text, Rectangle, etc.).
2.28 scaleAnimation
template <class T>
void scaleAnimation(float const &DELTA_TIME, float &var, T &obj, short varSign = 1, float scaleSize = 1.f)
Source Code
Allows you to make a stretch animation on an SFML object.
2.29 setFrame
void setFrame(sf::Sprite &sprite, float frame, int subFrame, int frameSize = 32, int recWidth = 32, int recHeight = 32)
Source Code
Defines the animation of a sprite (click here Figure 1 to see how it is used).
2.30 setSFMLObjOutlineColor
First form
template <class T>
void setSFMLObjOutlineColor(T &obj, sf::Color color)
Source Code
Set the outline color.
Second form
template <class T>
void setSFMLObjOutlineColor(T &obj, float thickness, sf::Color color)
Source Code
Set the outline color and its size.
2.31 setSFMLObjTexRec
template <class T>
void setSFMLObjTexRec(T &obj, int x, int y, int w = 32, int h = 32)
Source Code
77
Set the intRect.
2.32 setSFMLObjProperties
template <class T>
void setSFMLObjProperties(T &obj, float x, float y, float angle = 0.f, int alpha = 255, float xScale = 1.f, float yScale = 1.f)
Source Code
Defines the various properties of an SFML object.
2.33 loadSFMLObjResource
First form
template <class T>
bool loadSFMLObjResource(T &obj, std::string filePath, bool stopExecution = false)
Source Code
Allows to load a resource for an SFML object (Texture, Sound Buffer, etc.).
Parameter :
obj SFML object.
filePath resource file path.
stopExecution allows to stop the execution of the program in case of error.
Return true if the resource file has been loaded correctly and false if not.
Second form
template <class T>
inline bool loadSFMLObjResource(sf::SoundBuffer &sb, sf::Sound &snd, T &obj, std::string filePath, bool stopExecution
= false)
Source Code
Allows to load a resource file for a Sound Buffer and associate it with a sound.
2.34 getSFMLSndState
template <class T>
bool getSFMLSndState(T &obj, sf::Sound::Status state)
Source Code
Return the state of the sound.
2.35 collisionTestSFML
template <class A, class B>
bool collisionTestSFML(A const &objA, B const &objB)
Source Code
78
Test the collision between two (2) SFML objects.
2.36 createRectangle
void createRectangle(sf::RectangleShape &rec, sf::Vector2f recSize, sf::Color color, float x = 0.f, float y = 0.f, bool center =
true)
Source Code
Create a rectangle with various parameters.
2.37 textStyleConfig
void textStyleConfig(sf::Text &txt, bool underLined, bool boldText, bool italicText)
Source Code
Defines the style of a text.
2.38 createWText
void createWText(sf::Font const& fnt, sf::Text &txt, std::wstring const &text, float x, float y, sf::Color color, int txtSize =
20, bool underLined = false, bool boldText = false, bool italicText = false)
Source Code
Create a text with a std::wstring.
2.39 createText
First form
void createText(sf::Font const& fnt, sf::Text &txt, std::string const &text, float x, float y, int txtSize = 20, bool
underLined = false, bool boldText = false, bool italicText = false)
Second form
void createText(sf::Font const& fnt, sf::Text &txt, std::string const &text, float x, float y, bool centerText, int txtSize =
20, bool underLined = false, bool boldText = false, bool italicText = false)
Third form
void createText(sf::Font const& fnt, sf::Text &txt, std::string const &text, float x, float y, sf::Color color, int txtSize = 20,
bool underLined = false, bool boldText = false, bool italicText = false)
Fourth form
void createText(sf::Font const& fnt, sf::Text &txt, std::string const &text, float x, float y, sf::Color color, bool centerText,
int txtSize = 20, bool underLined = false, bool boldText = false, bool italicText = false)
Fifth form
void createText(sf::Font const& fnt, sf::Text &txt, std::string const &text, float x, float y, sf::Color color, sf::Color
outlineColor, int txtSize = 20, bool underLined = false, bool boldText = false, bool italicText = false)
Source Code
These functions allow to create text with various parameters.
2.40 createSprite
First form
79
void createSprite(sf::Texture &tex, sf::Sprite &spr, sf::Vector2f position, sf::Vector2f origin, bool smooth = true)
Second form
void createSprite(sf::Texture &tex, sf::Sprite &spr, sf::IntRect rec, sf::Vector2f position, sf::Vector2f origin, bool
repeatTexture = false, bool smooth = true)
Third form
void createSprite(sf::Texture &tex, sf::Sprite &spr, sf::IntRect rec, sf::Vector2f position, sf::Vector2f origin, sf::Vector2f
scale, unsigned int alpha = 255, bool repeatTexture = false, bool smooth = true)
Source Code
These functions allow to create a sprite with various parameters.
2.41 mouseCollision
First form
template <class T>
bool mouseCollision(sf::RenderWindow &window, T const &obj
#if defined(__ANDROID__)
, unsigned int finger = 0
#endif
)
Source Code
Windows, Linux: Detects if the mouse cursor collides with an object in the window.
Android: Detects if the user touches an object in the window.
Parameter:
obj the object with which we want to test.
finger represents the finger.
Return true if there is a collision and false if not.
Example :
if (mouseCollision(window, sprite))
{
// do something
}
Second form
template <class T>
bool mouseCollision(sf::RenderWindow &window, T const &obj, sf::RectangleShape &cursor
#if defined(__ANDROID__)
, unsigned int finger = 0
80
#endif
)
Source Code
Windows, Linux: Detects if the mouse cursor collides with an object in the window.
Android: Detects if the user touches an object in the window.
Parameter:
obj the object with which we want to test.
cursor allows to recover the position of the collision point.
finger represents the finger.
Return true if there is a collision and false if not.
Example:
sf::ReactangleShape rec;
if (mouseCollision(window, sprite, rec))
{
float cursorXPosition = rec.getPosition.x();
float cursorYPosition = rec.getPosition.y();
}
3. Other functions
3.1 vibrate
int vibrate(sf::Time duration)
Source Code
Launches the Android vibrator.
3.2 openURL
void openURL(std::string urlStr)
Source Code
Open a URL in the browser (e.g www.website.com).
3.3 setScreenLock
void setScreenLock(bool disableLock)
Source Code
Set android screen lock.
3.4 jstring2string
static std::string jstring2string(JNIEnv *env, jstring jStr)
Source Code
Convert jstring to std::string.
81
3.5 getDeviceId
static std::string getDeviceId(JNIEnv *env, ANativeActivity *activity)
Source Code
Return Android device id.
External library
1. Swoosh
It is integrated by default to the engine. It is thanks to it that the engine manages to make transitions effects.
For more information please click here.
2. Tiny File Dialogs (only for Windows and Linux)
2.1 class TinyDialogBox
class TinyDialogBox;
Header : isEngine/ext_lib/TinyFileDialogs/TinyDialogsBox.h
Source Code
A class that allows you to use the Tinyfiledialogs library in the simplest way. It allows you to use the dialog boxes of the
operating system (Windows and Linux).
2.2 tinyString
#if !defined(SFML_SYSTEM_LINUX)
typedef wchar_t const* tinyString;
#else
typedef char const* tinyString;
#endif
Source Code
Custom type which allows to manipulate the data of tinyFileDialogs. When using tinyFileDialogs different data
depending on the operating system. On windows the strings become wchar_t const* and on Linux char const*, which
implies the use of two (2) different types having the same purpose for the same program. The tinyString type
overcomes this problem by automatically determining the type that corresponds to the target operating system.
2.3 TINY_FILE_DIALOGBOX_PATH
static tinyString TINY_FILE_DIALOGBOX_PATH;
Source Code
Stores file path of dialog box.
2.4 enum FileDialogType
enum FileDialogType;
82
Enumerator
SAVE_FILE
Save file
LOAD_FILE
Load file
Source Code
Represents the type of dialog box to display.
2.5 enum DialogType
enum DialogType;
Enumerator
OK
Message with button OK
OKCANCEL
Message with button OK et CANCEL
YESNO
Message with button YES et NO
Source Code
Represents the buttons that will be displayed on the dialog box.
2.6 enum IconType
enum IconType;
Enumerator
INFO
Dialog box with an INFO icon
WARNING
Dialog box with an WARNING icon
ERROR_ICO
Dialog box with an ERROR icon
QUESTION
Dialog box with an QUESTION icon
Source Code
Represents the icon that will be displayed on the dialog box.
2.7 enumDialogTypeToStr / enumIconTypeToStr
static tinyString const enumDialogTypeToStr(DialogType val)
static tinyString const enumIconTypeToStr(IconType val)
Source Code
These functions convert enum to string which will be used later in the library functions.
2.8 showDialogBox
static int showDialogBox(std::string title,
std::string msg,
DialogType dialogType,
IconType iconType
)
Source Code
83
Displays a message dialog box.
Return 1 when the user clicks on the OK button and 0 when he clicks on CANCEL or NO.
2.9 showFileDialogBox
static std::string showFileDialogBox(FileDialogType type,
std::string title,
tinyString filterPatterns[],
std::string fileName = "file",
std::string msgError = "Unable to access file!",
std::string errTitle = "Error"
)
Source Code
Displays a file dialog box.
Return file path if the function was successful and "" (empty string) if not.
2.10 showFolderDialogBox
static std::string showFolderDialogBox(std::string title,
std::string defaultPath,
#if !defined(SFML_SYSTEM_LINUX)
= L"C:\\",
#else
= "/home/",
#endif
std::string msgError = "Unable to access folder!",
std::string errTitle = "Error"
)
Source Code
Displays a folder selection dialog box.
Return folder path if function was successful and "" (empty string) if not.
3. Box 2D
Box 2D is a physical engine integrated into the game engine. To use it in a scene you must include it this way:
#include "../../../isEngine/ext_lib/Box2D/Box2D.h"
84
Game Engine
1. class GameEngine
class GameEngine;
Header : isEngine/core/GameEngine.h
Source Code
This Class ensures the interconnection of the different components of the engine and launches the rendering loop in
which the game will take place.
2. Methods of GameEngine
2.1 GameEngine
GameEngine()
Source Code
Default constructor.
2.2 initEngine
bool initEngine()
Source Code
Initializes the game engine.
2.3 play
bool play()
Source Code
Game engine main render loop.
2.4 basicSFMLmain
bool basicSFMLmain()
Source Code
Classic SFML window rendering loop.
2.5 getRenderWindow
sf::RenderWindow& getRenderWindow()
Source Code
Return SFML window.
Game setup
namespace GameConfig;
Header : app_src/config/GameConfig.h
85
Allows you to define parameters to preconfigure these parts of the game: The size of the window and the view, The
keyboard and mouse keys to use to control the game, the game information (name, author, version), path resource files
(sound, image, backup, etc.) and Admob information.
1. enum DisplayOption
enum DisplayOption;
Enumerator
RESUME_GAME
When player close pause menu
GAME_OPTION_RESTART
Restart the scene with the restart option
QUIT_GAME
When player use quit option
INTRO
Access the Introduction scene
RESTART_LEVEL
Restart the scene when you lose
NEXT_LEVEL
Go to the next level
MAIN_MENU
Access the Main Menu scene
GAME_LEVEL
Access the Game Level scene
GAME_OVER
Access the Game Over scene
GAME_END_SCREEN
Go to the End of Game scene
Source Code
Allows to manipulate the different scenes and menu pause.
2. Window setting
2.1 WINDOW_WIDTH
static const unsigned int WINDOW_WIDTH
Source Code
Set window width.
2.2 WINDOW_HEIGHT
static const unsigned int WINDOW_HEIGHT
Source Code
Set window height.
2.3 VIEW_WIDTH
static const float VIEW_WIDTH
Source Code
Set view width.
2.4 VIEW_HEIGHT
static const float VIEW_HEIGHT
Source Code
Set view height.
2.5 FPS
static const float FPS
86
Source Code
Set the FPS (Frame Per Second) of the game.
2.6 WINDOW_SETTINGS
static const is::WindowStyle WINDOW_SETTINGS
Source Code
Set the window style.
3. Parameter of validation buttons
3.1 KEY_VALIDATION_MOUSE
static const sf::Mouse::Button KEY_VALIDATION_MOUSE
Source Code
Represents the button that validates the options with the mouse.
3.2 KEY_VALIDATION_KEYBOARD
static const sf::Keyboard::Key KEY_VALIDATION_KEYBOARD
Source Code
Represents the key that validates the options with the keyboard.
3.3 KEY_CANCEL
static const sf::Keyboard::Key KEY_CANCEL
Source Code
Represents the key that cancels options with the keyboard.
4. Keyboard key setting
4.1 KEY_A
static const sf::Keyboard::Key KEY_A
Source Code
Represents the key A.
4.2 KEY_B
static const sf::Keyboard::Key KEY_B
Source Code
Represents the key B.
4.3 KEY_LEFT
static const sf::Keyboard::Key KEY_LEFT
Source Code
Represents the key LEFT.
4.4 KEY_RIGHT
87
static const sf::Keyboard::Key KEY_RIGHT
Source Code
Represents the key RIGHT.
4.5 KEY_UP
static const sf::Keyboard::Key KEY_UP
Source Code
Represents the key UP.
4.6 KEY_DOWN
static const sf::Keyboard::Key KEY_DOWN
Source Code
Represents the key DOWN.
5. Game information
5.1 MAJOR
static const std::string MAJOR
Source Code
Set the major version.
5.2 MINOR
static const std::string MINOR
Source Code
Set the minor version.
5.3 getGameVersion
inline std::string getGameVersion()
Source Code
Return version of the game.
5.4 GAME_NAME
static std::wstring const GAME_NAME
Source Code
Set the name of the game.
5.5 GAME_AUTHOR
static std::wstring const GAME_AUTHOR
Source Code
Set the name of the author.
88
6. Admob setting
namespace AdmobConfig;
Allows you to define Admob information so that ads can be displayed in the game. This information is provided on the
Google Admob platform!
6.1 Ad Id
6.1.1 kAdMobAppID
static const char* kAdMobAppID
Source Code
Admob application code.
6.1.2 kBannerAdUnit
static const char* kBannerAdUnit
Source Code
Banner code.
6.1.3 kRewardedVideoAdUnit
static const char* kRewardedVideoAdUnit
Source Code
Reward video code.
6.2 Banner size
6.2.1 kBannerWidth
static const int kBannerWidth
Source Code
Set the width of the ad banner.
6.2.2 kBannerHeight
static const int kBannerHeight
Source Code
Set the height of the ad banner.
6.3 Target audience
6.3.1 kBirthdayDay
static const int kBirthdayDay
Source Code
Set users' birth day.
6.3.2 kBirthdayMonth
static const int kBirthdayMonth
89
Source Code
Set users' birth month.
6.3.3 kBirthdayYear
static const int kBirthdayYear
Source Code
Define users' year of birth.
6.3.4 kKeywords
static const char* kKeywords[]
Source Code
Keywords to use when requesting an ad.
7. Path of the resource files
7.1 GUI_DIR
static std::string const GUI_DIR
Source Code
Path of resource files that serve as a graphical interface.
7.2 FONT_DIR
static std::string const FONT_DIR
Source Code
Path of resource files that serve as font.
7.3 SPRITES_DIR
static std::string const SPRITES_DIR
Source Code
Path of resource files that serve as Sprite.
7.4 TILES_DIR
static std::string const TILES_DIR
Source Code
Path to resource files that serve as tiles and background.
7.5 SFX_DIR
static std::string const SFX_DIR
Source Code
Path of resource files that serve as SFX.
7.6 MUSIC_DIR
90
static std::string const MUSIC_DIR
Source Code
Path to resource files that serve as music.
8. Game package name (Android)
static std::string const PACKAGE_NAME
Source Code
Name of the game package. Represents the place where your data will be saved on Android.
You must apply this name for the applicationId in the build.gradle file
9. Backup file path
9.1 GAME_DATA_FILE
static std::string const GAME_DATA_FILE
Source Code
Path to the game save file.
9.2 CONFIG_FILE
static std::string const CONFIG_FILE
Source Code
Path to the game configuration file.
9.3 GAME_PAD_FILE
static std::string const GAME_PAD_FILE
Source Code
Path for the configuration file of the Virtual Game Pad on Android.
Activity
1. class GameActivity
class GameActivity;
Header : app_src/activity/GameActivity.h
Source Code
Allows you to launch the different game scenes. Another special feature of this class is that it links the engine scenes
and the SWOOSH library in order to be able to use the transition effects.
2. Elements of GameActivity
2.1 GameActivity
GameActivity(ActivityController& controller, GameSystemExtended &gameSysExt)
Source Code
91
Class constructor, it takes as parameter the activity controller (from the SWOOSH library) and game system manager
(click here for more information: 1).
2.2 m_gameScene
std::shared_ptr<is::GameDisplay> m_gameScene;
Source Code
Instance of the scene that will be used.
2.3 onStart
virtual void onStart()
Source Code
When the scene is launched.
2.4 onUpdate
virtual void onUpdate(double elapsed)
Source Code
Used to update scene information.
2.5 onLeave
virtual void onLeave()
Source Code
When the scene is no longer used (interruption).
2.6 onExit
virtual void onExit()
Source Code
When we leave the scene for another.
2.7 onEnter
virtual void onEnter()
Source Code
When the segue of the scene begins.
2.8 onResume
virtual void onResume()
Source Code
When we resume the scene after an interruption.
2.9 onDraw
virtual void onDraw(sf::RenderTexture& surface)
92
Source Code
Displays the scene.
2.10 onEnd
virtual void onEnd()
Source Code
When we leave the scene (destruction).
Game Level
1. Level
In is::Engine the game levels are integer arrays contained in header files (file.h). These levels are created thanks to
is::Level Editor (project link) which is delivered with the engine.
Header : app_src/levels/Level.h
2. Integration of a level
To integrate a level we include its header in the Level.h file in this way:
#include "../levels/level_1.h"
3. Elements to manage levels
3.1 namespace level
namespace level;
Source Code
Contains the elements which are used to manage the levels.
3.2 enum LevelId
enum LevelId
{
LEVEL_1,
LEVEL_2,
/* … */
, LEVEL_MAX // Allows to know the total number of integrated level
}
Source Code
Represents the index of each level. Each time a new level is integrated into the engine, you must declare its index.
3.3 getLevelMap
inline short const* getLevelMap(int CURRENT_LEVEL)
Source Code
93
Return the level array entered in the parameter.
Each time a new level is integrated, you must enter the instruction that will return this level in the function.
Example:
Integration in function:
// Returns the level array found in level_1.h
inline short const* getLevelMap(int CURRENT_LEVEL)
{
switch (CURRENT_LEVEL)
{
case LEVEL_1 : return LEVEL_1_MAP; break; // LEVEL_1_MAP is the name of the array found in level_1.h
// ...
Use in an external source file: (This is a simple example just to explain the principle to you. To go further,
please refer to the Engine Demo)
short *currentLevelArray = getLevelMap(LEVEL_1); // Return the array which is in level_1.h
Game language
1. Languages
Languages are represented in is::Engine by string arrays.
Header : app_src/language/GameLanguage.h
2. Elements to manage languages
2.1 namespace lang
namespace lang;
Source Code
Used to manage game languages.
2.2 enum GameLanguage
enum GameLanguage
{
ENGLISH, ///< Represents the English language
FRANCAIS, ///< Represents the French language
/* … */
}
Source Code
94
This enumeration allows to implement the index of each language in order to provide the used more easily during the
development.
Example:
Create a sentence:
static std::string hello_world[] = { "Hello World !", "Salut le monde !" }; // To put in GameLanguage.h
Use: (This is a simple example just to explain the principle to you. To go further, please refer to the Engine
Demo)
gameSystemExt.m_gameLanguage = is::lang::GameLanguage::ENGLISH; // Choice of English language
is::showLog(is::lang::hello_world[gameSystemExt.m_gameLanguage]); // we will have in the console: Hello World !
gameSystemExt.m_gameLanguage = is::lang::GameLanguage::FRANCAIS; // Choice of French language
is::showLog(is::lang::hello_world[gameSystemExt.m_gameLanguage]); // we will have in the console: Salut le monde
!"
Game Dialog Box
1. class GameDialog
class GameDialog;
Header : app_src/objects/widgets/GameDialog.h
Source Code
Class that allows you to display dialog boxes like in RPG games. It is closely related to the language part of the game
(click here for more information: 1). To be able to display a dialog you must define a string array representing this
dialog in GameLanguage.h
2. Elements of GameDialog
2.1 GameDialog
GameDialog(sf::Texture &tex, sf::Font &fnt, is::GameDisplay *scene)
Source Code
Constructor of the class, it takes as a parameter texture, font and the scene in which it is used.
2.2 enum DialogIndex
enum DialogIndex
{
DIALOG_NONE = -1,
DIALOG_PLAYER_MOVE, // Represents the dialog that talks about how to move the player
/* … */
};
Source Code
95
Represents the different dialogs that will be displayed in the game. The information that is defined inside is linked to
the language part of the game.
Each time an index is added we must declare its string array in GameLanguage.h.
Example:
DIALOG_PLAYER_MOVE dialog declaration in GameLanguage.h :
static std::wstring dialog_player_move[] = {L"Press LEFT or RIGHT to move.\n"
"Press A to Jump.",
L"Appuie sur GAUCHE ou DROITE pour te déplacer.\n"
"Appuie sur A pour sauter."};
2.3 linkArrayToEnum
void linkArrayToEnum()
Source Code
Connect the string array found in GameLanguage.h and the dialogue index.
Example:
Link an Index and its string array: (This is a simple example just to explain the principle to you. To go
further, please refer to the Engine Demo)
void linkArrayToEnum()
{
// …
switch (m_dialogIndex)
{
case DIALOG_PLAYER_MOVE: // dialogue index
m_msgIndexMax = is::arraySize(is::lang::dialog_player_move); // Determines the number of sentences
checkMsg(is::lang::dialog_player_move); // Define the dialogue thanks to its string array
break;
// …
2.4 step
void step(const float &DELTA_TIME)
Source Code
Updates the information in the dialog box.
2.5 setDialog
void setDialog(DialogIndex dialogIndex)
Source Code
96
Defines the dialog that will be launched.
2.6 setMouseInCollison
void setMouseInCollison(bool val)
Source Code
Force the collision of the mouse cursor or finger (on Android) with the dialog box.
2.7 draw
void draw(sf::RenderTexture &surface)
Source Code
Displays the dialog box.
2.8 getDialogIndex
DialogIndex getDialogIndex() const
Source Code
Return the enumerator of the dialog that is displayed.
2.9 getMouseInCollison
bool getMouseInCollison() const
Source Code
Return true when the mouse cursor or the user's finger (on Android) touches the dialog box, false if not.
2.10 showDialog
bool showDialog() const
Source Code
Return true when the dialog is open and false if not.
Game Example
1. Introduction
In this part of the document we will find out how to use the functions of is::Engine 2.0 to create a mini game. Note that
this is just a short tutorial to get you started with the engine.
We are going to create an arcade game in which we control a Helicopter whose goal is to avoid obstacles and collect
bonus items that increase time of the chronometer and its score. If the level clock reaches zero (0), it loses the game.
The game will be playable on Android and PC.
97
You can access the project here.
2. How the game will be created?
2.1 Here are the elements of the engine that the game will use
- GameDisplay class to create scenes
- MainObject class and these parents to create game play objects (Player, HUD, Bonus, etc.)
- GameKeyData class to control the player
- GameDialog class to display the tutorial
- GameLangague.h to add sentences to translate
- Some functions found in GameFunction.h
- Activity class to launch the different scenes and make them interact with each other
2.2 The objects that will be used in the game
A Main Menu which will contain these objects:
- A Text for the title of the game
- Two (2) sprites which will serve as Buttons: One to start the game and another to exit
- Two (2) texts which will serve as title for the Buttons
A Scene called GameLevel where the game takes place and will have for content:
- A player object that will serve as a helicopter
- A HUD object
- A cross-shaped sprite to exit the Level
- A sprite for the background
- Sounds
- Text to display the game over message
- An object container (std::vector) for Bonuses
- An object container (std::vector) for Obstacles
2.3 The roles of objects
Activity class
- Launch the different scenes
- Transition between Main Menu and Game Level and vice versa.
MainMenu class
- Navigate the menu with the mouse (touch on Android) and keyboard
- Use the validation keys to choose an option
- Exit the menu using a dialog box
GameLevel class
- Start the game
- Restart the level when the player loses
- Quit the level when the user clicks on the cross (sprite)
Class Player will be a Helicopter:
- The UP, DOWN, LEFT, RIGHT keys will be used to move the object
- The key A to accelerate
- The key B for normal speed
- Animated the sprite
Bonus class
- Disappears when the player touches it
- Increase the Score and time of the player and play a sound when it is destroyed
98
Obstacle class
- Collision with the player (remove health)
HUD class
- Displays the level timer
- Displays the number of Bonuses
- Displays the player's score
- Displays the player's health
3. Integration of game sentences
3.1 Creation of sentences in GameLanguage.h
#include "../../isEngine/system/function/GameKeyName.h"
namespace is
{
/// Access to content that allows internationalization of the game
namespace lang
{
/// Represent the index of each language
enum GameLanguage
{
ENGLISH, ///< English language index
FRANCAIS, ///< French language index
};
// ------------------------ message box answer ------------------------
static std::string pad_answer_ok[] = {"OK", "OK"};
static std::string pad_answer_yes[] = {"YES", "OUI"};
static std::string pad_answer_no[] = {"NO", "NON"};
// ------------------------ intro ------------------------
static std::string pad_game_language[] = {"English", "French"};
// ------------------------ menu ------------------------
static std::string pad_main_menu[] = {"Main Menu", "Menu Principal"};
static std::string pad_new_game[] = {"Start Game", "Nouvelle Partie"};
static std::string pad_quit_game[] = {"Quit Game", "Quitter le Jeu"};
static std::string msg_quit_game[] = {"Quit game?", "Quitter le jeu?"};
// ------------------------ level dialog ------------------------
static std::string pad_dialog_skip[] = {"Skip", "Passer"};
#if defined(__ANDROID__)
static std::wstring dialog_player_move[] = {L"Press LEFT, RIGHT, UP or DOWN to move.\n"
"Press A to Accelerate and B to decelerate.",
L"Appuie sur GAUCHE, DROITE, HAUT, BAS pour te déplacer.\n"
"Appuie sur A pour Accélerer et B pour Ralentire."};
#else
static std::wstring dialog_player_move[] = {L"Press " + is::getKeyWName(is::GameConfig::KEY_LEFT) + L", " +
is::getKeyWName(is::GameConfig::KEY_RIGHT) + L", " +
is::getKeyWName(is::GameConfig::KEY_UP) + L" or " +
is::getKeyWName(is::GameConfig::KEY_DOWN) + L" to move.\n"
"Press " + is::getKeyWName(is::GameConfig::KEY_A) + L" to Accelerate and " +
is::getKeyWName(is::GameConfig::KEY_B) + L" to Decelerate.",
99
L"Appuie sur " + is::getKeyWName(is::GameConfig::KEY_LEFT) + L", " +
is::getKeyWName(is::GameConfig::KEY_RIGHT) + L", " +
is::getKeyWName(is::GameConfig::KEY_UP) + L" ou " +
is::getKeyWName(is::GameConfig::KEY_DOWN) + L" pour te déplacer.\n"
"Appuie sur " + is::getKeyWName(is::GameConfig::KEY_A) + L" pour Accélerer et " +
is::getKeyWName(is::GameConfig::KEY_B) + L" pour Ralentire."};
#endif
// ------------------------ game level ------------------------
static std::string msg_game_over[] = {"Your score : ", "Votre score : "};
static std::string msg_clic_restart[] = {"Click to restart", "Cliquer pour recommencer"};
}
}
Explanation
This file makes it possible to define the sentences to be translated which will be used in the game. A sentence to be
translated is represented by an array of strings (std::string or std::wstring). The first index of the array represents the
first language, the next index the second and so on.
static std::wstring dialog_player_move
Source Code
Sentence that will be used later in the dialog box to show the user how to control the helicopter.
On Android we display how to move the player relative to the keys of the Virtual Game Pad and on PC relative to the
keys of the keyboard (which can change according to the parameters defined in GameConfig.h).
is::getKeyWName(is::GameConfig::KEY_LEFT)
Source Code
Allows to obtain the name of the keyboard key (in the form of a std::wstring) thanks to its associated code.
This allows you to know the name of the keyboard key associated with each action.
3.2 Associate of the dialog box with the sentence of the game
The code below is part of the GameDialog class declaration.
//…
enum DialogIndex
{
DIALOG_NONE = -1,
DIALOG_PLAYER_MOVE
};
// …
void linkArrayToEnum()
{
auto setMsg = [this](std::wstring txt)
{
m_strDialog = txt;
};
auto checkMsg =[this, &setMsg](std::wstring txt[])
{
100
if (m_msgIndex < m_msgIndexMax) setMsg(txt[m_msgIndex + m_scene->getGameSystem().m_gameLanguage]);
};
// each enum with its array of string
switch (m_dialogIndex)
{
case DIALOG_PLAYER_MOVE:
m_msgIndexMax = is::arraySize(is::lang::dialog_player_move);
checkMsg(is::lang::dialog_player_move);
break;
default:
break;
}
}
// …
Explanation
The DialogIndex enum and the void linkArrayToEnum() function are the two elements of the GameDialog class
which allows us to display sentences from GameLanguage.h with the dialog box.
DIALOG_PLAYER_MOVE
Source Code
Represents the sentence dialog_player_move of GameLanguage.h. The elements of the DialogIndex enum are used to
link the sentences of GameLanguage.h and the GameDialog class.
switch (m_dialogIndex)
{
case DIALOG_PLAYER_MOVE:
m_msgIndexMax = is::arraySize(is::lang::dialog_player_move);
checkMsg(is::lang::dialog_player_move);
break;
Source Code
These instructions allow you to associate a sentence from GameLanguage.h with the GameDialog class. The
procedure is the same for any other type of sentence but do not forget that for each sentence (string array) you must
define its element in enum DialogIndex.
4. Creation of game classes
4.1 Obstacle class
4.1.1 Header
#include "../../../isEngine/system/entity/MainObject.h"
#include "../../../isEngine/system/entity/parents/ScorePoint.h"
class Obstacle : public is::MainObject, public is::ScorePoint
{
public:
Obstacle(sf::Texture &tex, float x, float y);
void step(float const& DELTA_TIME);
};
Explanation
101
Obstacle class is a class which inherits from MainObject (offers functions to manage the movement and display of the
object) and ScorePoint a class which allows to assign bonus points to objects.
void step(float const& DELTA_TIME) allows to update instances of Obstacle class.
4.1.2 Implementation
4.1.2.1 Obstacle
Obstacle::Obstacle(sf::Texture &tex, float x, float y):
MainObject(x, y),
ScorePoint(20)
{
// define collision mask
m_w = 32;
m_h = 32;
m_speed = -12.f;
// load texture
is::createSprite(tex, m_sprParent, sf::IntRect(0, 0, 32, 32), sf::Vector2f(m_x, m_y), sf::Vector2f(0.f, 0.f), false, false);
updateCollisionMask();
}
Explanation
Constructor of the class that takes the texture and position of the object in the scene as parameters.
ScorePoint(20) represents the score that is assigned to the object. Inside the block there is the definition of the size of
the collision mask, the speed of the object and the function which makes it possible to create the sprite of the object.
4.1.2.2 step
void Obstacle::step(float const& DELTA_TIME)
{
m_x += ((m_speed * is::VALUE_CONVERSION) * DELTA_TIME);
updateCollisionMask();
updateSprite();
}
Explanation
This method allows you to move the object to the left depending on its speed, update the position of the collision mask
and the sprite.
4.2 Bonus class
4.2.1 Header
#include "../../../isEngine/system/entity/MainObject.h"
#include "../../../isEngine/system/entity/parents/Destructible.h"
#include "../../../isEngine/system/entity/parents/ScorePoint.h"
#include "../../../isEngine/system/entity/parents/Step.h"
#include "../../gamesystem_ext/GameSystemExtended.h"
class Bonus : public is::MainObject, public is::Destructible, public is::ScorePoint, public is::Step
{
public:
Bonus(sf::Texture &tex, float x, float y);
void step(float const &DELTA_TIME);
};
Explanation
102
Class daughter of MainObject, it also inherits from Destructible which offers functions to manage the destruction of
these instances explicitly. ScorePoint to assign a score point to the object which will be counted later. Step allows to
manage the different steps of the object: collision with the player and destruction.
4.2.2 Implementation
4.2.2.1 Bonus
Bonus::Bonus(sf::Texture &tex, float x, float y):
MainObject(x, y),
Destructible(),
ScorePoint(10),
Step(0)
{
m_w = 32;
m_h = 32;
m_speed = -15.f;
is::createSprite(tex, m_sprParent, sf::IntRect(0, 0, 32, 32), sf::Vector2f(m_x, m_y), sf::Vector2f(16.f, 16.f));
}
Explanation
Constructor that takes the texture of the sprite and the position of the object in the scene.
Inside, the size of the collision mask was defined with the speed of the object, followed by the function which creates
the sprite of the object.
4.2.2.2 step
void Bonus::step(float const &DELTA_TIME)
{
m_x += ((m_speed * is::VALUE_CONVERSION) * DELTA_TIME);
if (m_step == 1) m_destroy = true;
updateSprite();
updateCollisionMask();
}
Explanation
This method makes it possible to move the object and to start the destruction of the object when its step passes to 1. It
also updates the properties of the sprite and that of the collision mask.
4.3 Player class
4.3.1 Header
#include "../../../isEngine/system/entity/MainObject.h"
#include "../../../isEngine/system/entity/parents/Health.h"
#include "../../../isEngine/system/entity/parents/HurtEffect.h"
#include "../../../isEngine/system/function/GameKeyData.h"
class Player : public is::MainObject, public is::Health, public is::HurtEffect
{
public:
Player(GameKeyData &gameKey);
void loadResources(sf::Texture &tex);
void step(float const &DELTA_TIME);
private:
GameKeyData &m_gameKey;
};
Explanation
103
MainObjet's daughter class, Health offers methods to manage the player's health; HurtEffect allows to make an
invincibility effect (make the object blink when it is hurted).
void loadResources(sf::Texture &tex)
Source Code
Allocate external resources (used in the scene) to the object.
GameKeyData &m_gameKey;
Source Code
Used to manage game controls.
4.3.2 Implementation
4.3.2.1 Player
Player::Player(GameKeyData &gameKey):
MainObject(),
Health(3),
HurtEffect(m_sprParent),
m_gameKey(gameKey)
{
// define collision mask
m_w = 40;
m_h = 40;
m_isActive = true;
// initialize collision mask
updateCollisionMask();
}
Explanation
Constructor takes as a parameter the instance of the object which manages the controls of the game. It also allows to
define the number of health of the player and to choose the sprite which will be used to make the invincibility effect
when the player is hit by an obstacle.
Inside there is the definition of the size of the collision mask. The variable m_isActive = true allows the user to control
the object when it has not lost.
4.3.2.2 loadResources
void Player::loadResources(sf::Texture &tex)
{
is::createSprite(tex, m_sprParent, sf::IntRect(0, 0, 48, 48), sf::Vector2f(m_x, m_y), sf::Vector2f(0.f, 0.f));
}
Explanation
Use the texture loaded in the scene to create the player sprite.
4.3.2.3 step
void Player::step(float const &DELTA_TIME)
{
if (m_isActive)
{
// allow accelerate / decelerate player
if (m_gameKey.m_keyBPressed) m_speed = 0.f;
104
else if (m_gameKey.m_keyAPressed) m_speed = 200.f;
// move
float const SPEED(2.f);
m_hsp = 0.f;
m_vsp = 0.f;
if (m_gameKey.m_keyRightPressed) m_hsp = SPEED;
else if (m_gameKey.m_keyLeftPressed) m_hsp = -SPEED;
else if (m_gameKey.m_keyDownPressed) m_vsp = SPEED;
else if (m_gameKey.m_keyUpPressed) m_vsp = -SPEED;
// animation
m_frame += (0.33f * is::VALUE_CONVERSION) * DELTA_TIME; // image speed
setFrame(0.f, 3.6f);
// update collision mask (position, size, ...)
updateCollisionMask();
// update object position
m_x += (m_hsp * is::VALUE_CONVERSION) * DELTA_TIME;
m_y += (m_vsp * is::VALUE_CONVERSION) * DELTA_TIME;
}
else m_frame = 0.f;
is::setFrame(m_sprParent, m_frame, 4, 48, 48, 48); // update sprite and animation
updateSprite();
hurtStep(DELTA_TIME);
}
Explanation
Method in which we manage the behavior of the object. Here when the variable m_isActive is true then the user can
make the helicopter speed up when he presses the A key and make it slow down when he presses the B key. He can
also move the object with the four (4) keys directional. The animation of the Helicopter (which will be detailed
below) is also done in this block.
Note: when the user accelerates or slows down it also affects the other objects in the scene (Obstacles, Bonuses,
Background).
hurtStep(DELTA_TIME)
Source Code
Allows you to make the invincibility animation (flash the sprite).
Here's how the sprite is animated:
Figure 1
To animate the sprite we use a texture (Figure 1) composed of several sub-images having the same sizes. Each sub-
image represents a value (in red) that the variable m_frame can take. Below the elements which make it possible to
make an animation
is::setFrame(m_sprParent, m_frame, 4, 48, 48, 48)
105
Source Code
The function to animate the sprite. It takes as a parameter the sprite which will be used, the sub image which will be
displayed, the number of sub images on a line (here which is 4) and the 3 other parameters which are the size of the
sub images (they are similar but have different purposes).
Note: The function automatically cuts the image.
m_frame
Source Code
Allows to define the sprite sub-image which will be displayed.
setFrame(0.f, 3.6f);
Source Code
Allows to define the interval of m_frame, i.e. the sub-images to choose.
4.4 HUD class
4.4.1 Header
#include "../../../isEngine/system/entity/MainObject.h"
#include "../../../isEngine/system/function/GameTime.h"
#include "../../gamesystem_ext/GameSystemExtended.h"
#include "Player.h"
class HUD : public is::MainObject
{
public:
HUD(is::GameDisplay &scene, is::GameTime &gameTime, Player &player);
void loadResources(sf::Font const &fnt);
void step(float const &DELTA_TIME);
void draw(sf::RenderTexture &surface);
void setScore(int val);
private:
is::GameDisplay &m_scene;
is::GameTime &m_gameTime;
Player &m_player;
sf::Text m_txtHealth, m_txtBonus, m_txtLevelTime, m_txtScore;
};
Explanation
Class to display game play information on screen.
is::GameDisplay &m_scene
Source Code
Allows to have access to the scene in which the object is used to be able to position it and use the game play variables
(score, number of bonuses collected).
is::GameTime &m_gameTime
Source Code
Allows to display the chronometer.
Player &m_player
106
Source Code
Allows to displays player health.
4.4.2 Implementation
4.4.2.1 HUD
HUD::HUD(is::GameDisplay &scene, is::GameTime &gameTime, Player &player) :
m_scene(scene),
m_gameTime(gameTime),
m_player(player)
{}
Explanation
Constructor who takes the scene, the object that manages the chronometer and the player's instance as parameters.
4.4.2.2 loadResources
void HUD::loadResources(sf::Font const &fnt)
{
int const TXT_SIZE(20);
is::createText(fnt, m_txtScore, " ", 0.f, 0.f, sf::Color(255, 255, 255, 255), sf::Color(0, 0, 0, 255), TXT_SIZE);
is::createText(fnt, m_txtLevelTime, " ", 0.f, 0.f, sf::Color(255, 255, 255, 255), sf::Color(0, 0, 0, 255), TXT_SIZE);
is::createText(fnt, m_txtHealth, " ", 0.f, 0.f, sf::Color(255, 0, 0, 255), sf::Color(0, 0, 0, 255), TXT_SIZE);
is::createText(fnt, m_txtBonus, " ", 0.f, 0.f, sf::Color(255, 255, 255, 255), sf::Color(0, 0, 0, 255), TXT_SIZE);
}
Explanation
Allows to use the font loaded in the scene to create the texts.
4.4.2.3 step
void HUD::step(float const &DELTA_TIME)
{
float const TXT_X_POS(-300.f), TXT_Y_POS(16.f);
m_txtScore.setString("Score : " + is::writeZero(m_scene.getGameSystem().m_currentScore, 4));
is::setSFMLObjX_Y(m_txtScore, m_scene.getViewX() + TXT_X_POS, (m_scene.getViewY() - m_scene.getViewH() / 2.f) +
TXT_Y_POS);
m_txtLevelTime.setString("Time : " + m_gameTime.getTimeString());
is::setSFMLObjX_Y(m_txtLevelTime, m_scene.getViewX() + TXT_X_POS + 150.f, (m_scene.getViewY() -
m_scene.getViewH() / 2.f) + TXT_Y_POS);
m_txtHealth.setString("Health : " + is::writeZero(m_player.getHealth()));
is::setSFMLObjX_Y(m_txtHealth, m_scene.getViewX() + TXT_X_POS + 305.f, (m_scene.getViewY() -
m_scene.getViewH() / 2.f) + TXT_Y_POS);
m_txtBonus.setString("Bonus : " + is::writeZero(m_scene.getGameSystem().m_currentBonus));
is::setSFMLObjX_Y(m_txtBonus, m_scene.getViewX() + TXT_X_POS + 415.f, (m_scene.getViewY() -
m_scene.getViewH() / 2.f) + TXT_Y_POS);
}
Explanation
This method is used to position the texts on the screen and to update their information.
4.4.2.4 draw
void HUD::draw(sf::RenderTexture &surface)
{
surface.draw(m_txtScore);
surface.draw(m_txtLevelTime);
surface.draw(m_txtHealth);
107
surface.draw(m_txtBonus);
}
Explanation
Displays the various texts on the screen. This method is an overload!
4.5 MainMenu class
4.5.1 Header
#include "../../../isEngine/system/function/GameFunction.h"
#include "../../../isEngine/system/display/GameDisplay.h"
class GameMenu : public is::GameDisplay
{
public:
GameMenu(sf::RenderWindow &window, sf::View &view, sf::RenderTexture &surface, GameSystemExtended
&gameSysExt);
void step();
void componentsController();
void draw();
bool loadResources();
private:
sf::Font m_fontTitle;
sf::Texture m_texPad, m_texScreenBG;
sf::Sprite m_sprPad1, m_sprPad2, m_sprScreenBG;
sf::Text m_txtGameTitle, m_txtStartGame, m_txtQuit;
bool m_isStart, m_closeApplication;
};
Explanation
Class declaration that allows to create the scene of the Main Menu.
void componentsController()
Source Code
Method where the main menu buttons will be managed.
4.5.2 Implementation
4.5.2.1 MainMenu
GameMenu::GameMenu(sf::RenderWindow &window, sf::View &view, sf::RenderTexture &surface,
GameSystemExtended &gameSysExt):
GameDisplay(window, view, surface, gameSysExt, sf::Color::White),
m_isStart(true),
m_closeApplication(false)
{}
Explanation
Class constructor, takes the window, view, surface and manager of the game system as a parameter. It also allows to
define the background color of the stage (here which is White).
4.5.2.2 loadResources
bool GameMenu::loadResources()
{
if (!GameDisplay::loadParentResources()) return false;
108
m_gameSysExt.m_gameLanguage = is::lang::GameLanguage::ENGLISH; // set default language
// load textures
if (!m_texPad.loadFromFile(is::GameConfig::GUI_DIR + "main_menu_pad.png")) return false;
if (!m_texScreenBG.loadFromFile(is::GameConfig::GUI_DIR + "screen_background.png")) return false;
if (!m_fontTitle.loadFromFile(is::GameConfig::FONT_DIR + "space_ranger_3d_mp_pv.otf")) return false;
// game title
is::createWText(m_fontTitle, m_txtGameTitle, is::GameConfig::GAME_NAME, 65.f, 32.f, sf::Color(0, 0, 0), 64);
// create sprites
float const XPOS(225.f), YPOS(200.f), BTYSIZE(0.9f);
is::createSprite(m_texPad, m_sprPad1, sf::IntRect(0, 0, 192, 48), sf::Vector2f(XPOS, YPOS), sf::Vector2f(96.f, 24.f));
is::createSprite(m_texPad, m_sprPad2, sf::IntRect(0, 0, 192, 48), sf::Vector2f(XPOS, YPOS + 70.f), sf::Vector2f(96.f,
24.f));
is::createSprite(m_texPad, m_sprButtonSelect, sf::IntRect(192, 0, 192, 48), sf::Vector2f(XPOS, YPOS), sf::Vector2f(96.f,
24.f));
is::setSFMLObjScaleX_Y(m_sprPad1, 1.f, BTYSIZE);
is::setSFMLObjScaleX_Y(m_sprPad2, 1.f, BTYSIZE);
// sprite background
is::createSprite(m_texScreenBG, m_sprScreenBG, sf::IntRect(0, 0, 672, 512),sf::Vector2f(0.f, 0.f), sf::Vector2f(0.f , 0.f),
true);
// create text for main menu
float const TXT_Y_ON_BT(8.f);
int const _PAD_TXT_SIZE(22);
is::createText(m_fontSystem, m_txtStartGame, is::lang::pad_new_game[m_gameSysExt.m_gameLanguage],
is::getSFMLObjX(m_sprPad1), is::getSFMLObjY(m_sprPad1) - TXT_Y_ON_BT, sf::Color::Blue, true,
_PAD_TXT_SIZE);
is::createText(m_fontSystem, m_txtQuit, is::lang::pad_quit_game[m_gameSysExt.m_gameLanguage],
is::getSFMLObjX(m_sprPad2), is::getSFMLObjY(m_sprPad2) - TXT_Y_ON_BT, true, _PAD_TXT_SIZE);
return true;
}
Explanation
This method loads the resources that will be used in the menu and positions the objects.
m_gameSysExt.m_gameLanguage = is::lang::GameLanguage::ENGLISH;
Source Code
Allows you to define the default language of the game. If you change the value to is::lang::GameLanguage::FRENCH
the French language will be chosen.
is::lang::pad_new_game[m_gameSysExt.m_gameLanguage]
Source Code
- is::lang::pad_new_game : allows to use the array string found in GameLanguage.h.
- [m_gameSysExt.m_gameLanguage] : allows to choose the sentence that corresponds to the language.
4.5.2.3 componentsController
void GameMenu::componentsController()
{
const short OP_START_GAME(0), OP_QUIT(1);
// allow to know is mouse is in collision with sprite
bool mouseInCollisonPad(false);
109
// allows activated use of buttons
if (!m_gameSysExt.keyIsPressed(is::GameConfig::KEY_UP) &&
!m_gameSysExt.keyIsPressed(is::GameConfig::KEY_DOWN) &&
!m_gameSysExt.isPressed())
m_gameSysExt.m_keyIsPressed = false;
// m_isClose allow to deactivate scene object
if (!m_isClose)
{
if (mouseCollision(m_sprPad1) || mouseCollision(m_sprPad2)) mouseInCollisonPad = true;
// change option with mouse (touch on Android)
if (mouseCollision(m_sprPad1) && m_optionIndex != OP_START_GAME) setOptionIndex(OP_START_GAME, true,
1.4f);
if (mouseCollision(m_sprPad2) && m_optionIndex != OP_QUIT) setOptionIndex(OP_QUIT, true, 1.4f);
// avoid the long pressing button effect
if (!mouseInCollisonPad && m_gameSysExt.isPressed(is::GameSystem::ValidationButton::MOUSE))
m_gameSysExt.m_keyIsPressed = true;
// change option with keyboard (only for PC)
if (!m_gameSysExt.m_keyIsPressed && !mouseInCollisonPad)
{
if (m_gameSysExt.keyIsPressed(is::GameConfig::KEY_UP)) setOptionIndex(-1, false, 1.4f);
else if (m_gameSysExt.keyIsPressed(is::GameConfig::KEY_DOWN)) setOptionIndex(1, false, 1.4f);
if (m_optionIndex < OP_START_GAME) m_optionIndex = OP_QUIT;
if (m_optionIndex > OP_QUIT) m_optionIndex = OP_START_GAME;
}
// launch a dialog box which allow to quit the game
auto lauchDialogBox = [this]()
{
showMessageBox(is::lang::msg_quit_game[m_gameSysExt.m_gameLanguage]);
m_closeApplication = true;
m_keyBackPressed = false;
};
// validate menu option
if ((m_gameSysExt.isPressed(is::GameSystem::ValidationButton::KEYBOARD) ||
(m_gameSysExt.isPressed(is::GameSystem::ValidationButton::MOUSE) && mouseInCollisonPad)) &&
(m_waitTime == 0 && !m_gameSysExt.m_keyIsPressed))
{
auto playSelectSnd = [this]()
{
m_gameSysExt.playSound(m_sndSelectOption);
m_sprButtonSelectScale = 1.4f;
m_gameSysExt.useVibrate(m_vibrateTimeDuration);
};
switch (m_optionIndex)
{
case OP_START_GAME:
playSelectSnd();
m_gameSysExt.m_launchOption = is::DisplayOption::GAME_LEVEL;
m_isClose = true;
break;
case OP_QUIT: lauchDialogBox(); break;
}
m_keyBackPressed = false;
}
110
// Quit game
if (m_keyBackPressed) lauchDialogBox();
// change the color of the texts according to the chosen option
setTextAnimation(m_txtStartGame, m_sprPad1, OP_START_GAME);
setTextAnimation(m_txtQuit, m_sprPad2, OP_QUIT);
// PAD animation
is::scaleAnimation(DELTA_TIME, m_sprButtonSelectScale, m_sprButtonSelect, is::getSFMLObjXScale(m_sprPad1));
}
}
Explanation
This method is a subfunction of step(). It allows to use the game keys and the mouse (becomes the touch function on
Android) to navigate the menu and choose an option. It also allows to animate the main menu objects when you
perform an action (mouse over, click, press a key).
setOptionIndex(-1, false, 1.4f);
Source Code
Animate text, sprite and play a sound when changing an option.
m_gameSysExt.m_launchOption = is::DisplayOption::GAME_LEVEL
Source Code
Inform the engine that the next scene to launch will be the Level scene.
4.5.2.4 step
void GameMenu::step()
{
DELTA_TIME = getDeltaTime();
updateTimeWait(DELTA_TIME);
// even loop
while (m_window.pollEvent(m_event))
{
controlEventFocusClosing();
if (m_event.type == sf::Event::KeyReleased)
{
if (m_event.key.code == is::GameConfig::KEY_CANCEL) m_keyBackPressed = true;
}
}
// starting mechanism
if (m_isStart)
{
// window has focus
if (m_windowIsActive)
{
if (!m_showMsg)
{
componentController();
}
// MESSAGE BOX
else
{
updateMsgBox(DELTA_TIME);
111
// when user closes message box in update function execute this instruction
// "m_waitTime" allow to disable clicks on objects during a moment when user closes message box
if (!m_showMsg)
{
if (m_closeApplication) // quit game
{
if (m_msgAnswer == MsgAnswer::YES)
{
m_window.close();
m_isRunning = false;
}
else
{
m_waitTime = 20;
m_closeApplication = false;
}
}
}
}
}
}
if (m_isClose)
{
m_isStart = false;
m_isRunning = false;
}
}
Explanation
This method manages the event part associated with the scene and the dialog box of the game engine (not that of the
tutorial but the one that displays a YES - NO button), as well as the closing of the application.
m_isRunning = false;
Source Code
Stops the execution of the scene in order to leave it.
4.5.2.5 draw
void GameMenu::draw()
{
const short OP_START_GAME(0), OP_QUIT(1);
// draw background
m_surface.draw(m_sprScreenBG);
// draw game title
m_surface.draw(m_txtGameTitle);
// draw button
if (m_optionIndex != OP_START_GAME) m_surface.draw(m_sprPad1);
if (m_optionIndex != OP_QUIT) m_surface.draw(m_sprPad2);
m_surface.draw(m_sprButtonSelect);
m_surface.draw(m_txtStartGame);
m_surface.draw(m_txtQuit);
// message box
112
drawMsgBox();
}
Explanation
Displays the components of the Main Menu.
4.6 GameLevel class
4.6.1 Header
#include <memory>
#include "../../../isEngine/system/display/GameDisplay.h"
#include "../../../isEngine/system/function/GameKeyData.h"
#include "../../objects/gamelevel/Player.h"
#include "../../objects/gamelevel/Obstacle.h"
#include "../../objects/gamelevel/HUD.h"
#include "../../objects/gamelevel/Bonus.h"
#include "../../objects/widgets/GameDialog.h"
#include "../../language/GameLanguage.h"
class GameLevel : public is::GameDisplay
{
public:
GameLevel(sf::RenderWindow &window, sf::View &view, sf::RenderTexture &surface, GameSystemExtended
&gameSysExt);
void step();
void draw();
bool loadResources();
private:
void gamePlay();
void updateObjObstacleList();
void updateObjBonusList();
void playerLose();
void updateObjPlayer();
void updateBackground();
private:
std::vector<std::shared_ptr<Obstacle>> m_obstacleList;
std::vector<std::shared_ptr<Bonus>> m_bonusList;
sf::Texture m_texButtonClose, m_texPlayer, m_texObstacle, m_texBonus, m_texDialog, m_texJoystick, m_texLevelBg;
sf::Sprite m_sprLevelBg, m_sprButtonClose;
sf::Text m_txtGameInfo;
sf::SoundBuffer m_sbHurt, m_sbLose, m_sbHaveBonus;
sf::Sound m_sndHurt, m_sndLose, m_sndHaveBonus;
sf::Music m_mscLevel;
GameKeyData m_gameKey;
is::GameTime m_gameTime;
GameDialog m_gameDialog;
Player m_player;
HUD m_gameHud;
int m_timeCreateOstacle, m_timeCreateBonus;
};
Explanation
Declaration of the class that represents the level.
std::vector<std::shared_ptr<Obstacle>> m_obstacleList
std::vector<std::shared_ptr<Bonus>> m_bonusList
113
Source Code
Container of Bonus and Obstacle objects.
GameKeyData m_gameKey
Source Code
Object that allows to manage the game commands to control the player: keyboard key, mouse and Virtual Game Pad.
is::GameTime m_gameTime;
Source Code
Level chronometer.
sf::Text m_txtGameInfo
Source Code
Displays a message and the player’s score when he loses the game.
int m_timeCreateOstacle, m_timeCreateBonus
Source Code
Counter variable (in millisecond) to generate random objects in the scene.
4.6.2 Implementation
4.6.2.1 GameLevel
GameLevel::GameLevel(sf::RenderWindow &window, sf::View &view, sf::RenderTexture &surface,
GameSystemExtended &gameSysExt):
GameDisplay(window, view, surface, gameSysExt, sf::Color::White),
m_gameKey(this),
m_gameDialog(this),
m_player(m_gameKey),
m_gameHud(*this, m_gameTime, m_player),
m_timeCreateOstacle(59 * is::choose(2, 3, 5)),
m_timeCreateBonus(59 * is::choose(2, 4, 9))
{}
Explanation
We define a default time for counters that allow to generate objects in random ways in the level.
4.6.2.2 loadResources
bool GameLevel::loadResources()
{
if (!GameDisplay::loadParentResources()) return false;
// load buffers
if (!m_sbHurt.loadFromFile(is::GameConfig::SFX_DIR + "hurt.ogg")) return false;
if (!m_sbLose.loadFromFile(is::GameConfig::SFX_DIR + "lose.ogg")) return false;
if (!m_sbHaveBonus.loadFromFile(is::GameConfig::SFX_DIR + "have_bonus.ogg")) return false;
// sound
m_sndHurt.setBuffer(m_sbHurt);
m_sndLose.setBuffer(m_sbLose);
m_sndHaveBonus.setBuffer(m_sbHaveBonus);
114
// GUI resources
if (!m_texButtonClose.loadFromFile(is::GameConfig::GUI_DIR + "button_close.png")) return false;
if (!m_texDialog.loadFromFile(is::GameConfig::GUI_DIR + "dialog_box.png")) return false;
if (!m_texJoystick.loadFromFile(is::GameConfig::GUI_DIR + "game_pad.png")) return false;
m_gameKey.loadResources(m_texJoystick);
m_gameKey.step(0.f); // initialize sprite position
// sprites
if (!m_texPlayer.loadFromFile(is::GameConfig::SPRITES_DIR + "player.png")) return false;
if (!m_texBonus.loadFromFile(is::GameConfig::SPRITES_DIR + "bonus.png")) return false;
if (!m_texObstacle.loadFromFile(is::GameConfig::SPRITES_DIR + "obstacle.png")) return false;
// background
if (!m_texLevelBg.loadFromFile(is::GameConfig::TILES_DIR + "level_bg.png")) return false;
// CREATION OF THE LEVEL
// place the player
m_player.loadResources(m_texPlayer);
m_player.setPosition(32.f, 220.f);
// set time
m_gameTime.setTimeValue(0, 29, 59);
// create game over text
is::createText(m_fontMsg, m_txtGameInfo, "", 240.f, 200.f, false, 24);
// create close button
is::createSprite(m_texButtonClose, m_sprButtonClose, sf::IntRect(0, 0, 32, 32), sf::Vector2f(600.f, 16.f),
sf::Vector2f(0.f, 0.f), true);
// build background
// We enlarge the size of the background to make it repeat in game endlessly
is::createSprite(m_texLevelBg, m_sprLevelBg, sf::IntRect(0, 0, m_texLevelBg.getSize().x * 2.5, 480), sf::Vector2f(0.f,
0.f), sf::Vector2f(0.f, 0.f), true);
// load HUD resources
m_gameHud.setPosition(m_viewX, m_viewY);
m_gameHud.loadResources(m_fontSystem);
// load Dialog Box resources
m_gameDialog.loadResources(m_texDialog, m_fontSystem);
m_gameDialog.setDialog(GameDialog::DialogIndex::DIALOG_PLAYER_MOVE);
// load level music
m_mscLevel.openFromFile(is::GameConfig::MUSIC_DIR + "world_1_music.ogg");
m_mscLevel.setLoop(true);
m_mscLevel.play();
return true;
}
Explanation
Method to load the resources of the game (music, sounds, sprites, etc.), define the parameters for creating certain
objects and position the objects in the scene.
m_gameTime.setTimeValue(0, 29, 59)
Source Code
Set the chronometer time.
115
is::createSprite(m_texLevelBg, m_sprLevelBg, sf::IntRect(0, 0, m_texLevelBg.getSize().x * 2.5, 480),
sf::Vector2f(0.f, 0.f), sf::Vector2f(0.f, 0.f), true)
Source Code
Allows to create the background of the level by repeating its size over the length 2.5 times. This allows to scroll the
background infinitely on the x-axis.
m_gameDialog.setDialog(GameDialog::DialogIndex::DIALOG_PLAYER_MOVE)
Source Code
Displays the dialog box with the message that shows how to control the player.
4.6.2.3 updateObjPlayer
void GameLevel::updateObjPlayer()
{
m_player.step(DELTA_TIME);
}
Explanation
Method that updates the player.
4.6.2.4 playerLose
void GameLevel::playerLose()
{
m_mscLevel.stop();
m_gameSysExt.playSound(m_sndLose);
m_txtGameInfo.setString(is::lang::msg_game_over[m_gameSysExt.m_gameLanguage] +
is::numToStr(m_gameSysExt.m_currentScore) + "\n" +
is::lang::msg_clic_restart[m_gameSysExt.m_gameLanguage]);
m_player.setIsActive(false);
}
Explanation
This method allows to stop the game when the player is no longer healthy. It stops the game music, defines the game
over text with the player score that will be displayed and deactivates the player (which means that he lost).
4.6.2.5 updateObjObstacleList
void GameLevel::updateObjObstacleList()
{
WITH(m_obstacleList.size())
{
if (is::instanceExist(m_obstacleList[_I]))
{
// apply player acceleration on the object
m_obstacleList[_I]->moveX(-m_player.getSpeed() * DELTA_TIME);
// If the player touches the obstacle, his health is removed. if he is no longer healthy then game over
if (m_player.placeMetting(0, 0, m_obstacleList[_I]))
{
if (m_player.getHealth() > 1)
{
m_gameSysExt.playSound(m_sndHurt);
m_player.setIsHurt(30.f); // make blink
m_player.addHealth(-1);
m_obstacleList[_I].reset();
break;
116
}
else playerLose();
}
m_obstacleList[_I]->step(DELTA_TIME); // update object
// We destroy the object when it leaves to the left of the view
if (m_obstacleList[_I]->getX() < -32.f)
{
m_gameSysExt.m_currentScore += m_obstacleList[_I]->getScorePoint(); // add score point
m_obstacleList[_I].reset();
}
}
}
}
Explanation
Method that updates the Obstacles. Inside the WITH loop we check if the player is in collision with the object, if yes we
remove the obstacle and we remove a health, but if he no longer has health then the game is over.
if (m_obstacleList[_I]->getX() < -32.f)
Source Code
Lets know if the object is out on the left side of the window. If so we destroy it to free the memory space and add a score
point to the player.
4.6.2.6 updateObjBonusList
void GameLevel::updateObjBonusList()
{
WITH(m_bonusList.size())
{
if (is::instanceExist(m_bonusList[_I]))
{
// apply player acceleration on the object
m_bonusList[_I]->moveX(-m_player.getSpeed() * DELTA_TIME);
if (m_player.placeMetting(0, 0, m_bonusList[_I]) && m_bonusList[_I]->getStep() == 0)
{
m_gameSysExt.m_currentBonus++;
m_gameTime.addTimeValue(0, 15, 0); // add 10 second
m_gameSysExt.m_currentScore += m_bonusList[_I]->getScorePoint(); // add score point
m_gameSysExt.playSound(m_sndHaveBonus);
m_bonusList[_I]->addStep();
}
m_bonusList[_I]->step(DELTA_TIME); // update object
// destruction
if (m_bonusList[_I]->isDestroyed() || m_bonusList[_I]->getX() < -32.f) m_bonusList[_I].reset();
}
}
}
Explanation
Method that updates the Bonuses. Inside the WITH loop we check if the player is in collision with the object if yes we
add a score point and we increase the time of the level.
Then we check if the Bonus is out on the left side of the window, if yes we destroy it to free the memory space.
m_bonusList[_I]->getStep() == 0
117
Source Code
Allows to execute actions in the collision once and to be able to delete the Bonus later.
4.6.2.7 updateBackground
void GameLevel::updateBackground()
{
// Allows you to repeat the background endlessly
if (is::getSFMLObjX(m_sprLevelBg) < -static_cast<float>(m_texLevelBg.getSize().x)) is::setSFMLObjX(m_sprLevelBg,
0.f);
is::moveSFMLObjX(m_sprLevelBg, -(1.f * is::VALUE_CONVERSION + m_player.getSpeed()) * DELTA_TIME);
}
Explanation
This method updates the background by simulating an infinite scroll animation.
4.6.2.8 gamePlay
void GameLevel::gamePlay()
{
// GAME CONTROLLER
if (!m_gameSysExt.isPressed()) m_gameSysExt.m_keyIsPressed = false;
m_gameKey.step(DELTA_TIME);
// LEVEL CHRONOMETER
if (m_gameTime.getTimeValue() != 0) m_gameTime.step(DELTA_TIME, is::VALUE_CONVERSION, is::VALUE_TIME);
else playerLose();
// We create a second counter which creates objects randomly
m_timeCreateOstacle -= is::getMSecond(DELTA_TIME);
if (m_timeCreateOstacle == 0)
{
m_obstacleList.push_back(std::shared_ptr<Obstacle>(new Obstacle(m_texObstacle, m_viewW + 10.f,
m_player.getY())));
m_timeCreateOstacle = 59 * is::choose(3, 10, 3, 5);
}
m_timeCreateBonus -= is::getMSecond(DELTA_TIME);
if (m_timeCreateBonus == 0)
{
m_bonusList.push_back(std::shared_ptr<Bonus>(new Bonus(m_texBonus, m_viewW + 10.f, m_player.getY())));
m_timeCreateBonus = 59 * is::choose(3, 10, 20, 25);
}
// OBSTACLE
updateObjObstacleList();
// BONUS
updateObjBonusList();
// PLAYER
updateObjPlayer();
// HUD
m_gameHud.step(DELTA_TIME);
// BACKGROUND
updateBackground();
}
Explanation
118
Sub-function step(), it manages the level stopwatch, game control, the counters that generate the Bonus and Obstacle
objects and to call the functions that update the game play objects.
4.6.2.9 step
void GameLevel::step()
{
DELTA_TIME = getDeltaTime();
updateTimeWait(DELTA_TIME);
// even loop
while (m_window.pollEvent(m_event))
{
controlEventFocusClosing();
if (m_event.type == sf::Event::KeyReleased)
{
if (m_event.key.code == is::GameConfig::KEY_CANCEL) m_keyBackPressed = true;
}
}
// if the window is activated launch the game
if (m_windowIsActive)
{
// If the player loses and clicks on the screen then restart the level
if (m_gameSysExt.isPressed() && !m_player.getIsActive())
{
m_gameSysExt.playSound(m_sndSelectOption);
m_gameSysExt.m_launchOption = is::DisplayOption::RESTART_LEVEL;
m_isRunning = false;
}
// if player clicks on close button sprite then quit game
if (mouseCollision(m_sprButtonClose) && m_gameSysExt.isPressed())
{
m_mscLevel.stop();
m_gameSysExt.playSound(m_sndSelectOption);
m_gameSysExt.m_launchOption = is::DisplayOption::MAIN_MENU;
m_isRunning = false;
}
if (!m_gameDialog.showDialog())
{
if (m_player.getIsActive()) gamePlay();
}
else
{
if (!mouseCollision(m_gameDialog.getSprite()) && m_gameSysExt.isPressed()) m_gameSysExt.m_keyIsPressed =
true;
m_gameDialog.setPosition(m_viewX, m_viewY + 32.f);
}
m_gameDialog.step(DELTA_TIME);
}
}
Explanation
This method manages the event part associated with the scene, the dialog box for the tutorial and the options which
allow to start the level again or leave it for another one.
m_gameSysExt.m_launchOption = is::DisplayOption::MAIN_MENU
m_gameSysExt.m_launchOption = is::DisplayOption::RESTART_LEVEL
119
Source Code
The action that will be performed on a scene.
4.6.2.10 draw
void GameLevel::draw()
{
// draw background
m_surface.draw(m_sprLevelBg);
// draw bonus
WITH(m_bonusList.size())
{
if (is::instanceExist(m_bonusList[_I]))
{
if (m_bonusList[_I]->inViewRec(*this)) m_bonusList[_I]->draw(m_surface);
}
}
// draw blocks
WITH(m_obstacleList.size())
{
if (is::instanceExist(m_obstacleList[_I]))
{
if (m_obstacleList[_I]->inViewRec(*this)) m_obstacleList[_I]->draw(m_surface);
}
}
m_player.draw(m_surface);
m_gameHud.draw(m_surface);
// draw close button
m_surface.draw(m_sprButtonClose);
if (!m_player.getIsActive()) m_surface.draw(m_txtGameInfo);
// draw dialog box
m_gameDialog.draw(m_surface);
}
Explanation
Displays objects from the scene.
5. Integration and use of scenes in Activity
#include <memory>
#include "SwooshFiles.h"
#include "../scenes/GameMenu/GameMenu.h"
#include "../scenes/GameLevel/GameLevel.h"
using namespace swoosh::intent;
class GameActivity : public Activity
{
private:
std::shared_ptr<is::GameDisplay> m_gameScene;
public:
GameActivity(ActivityController& controller, GameSystemExtended &gameSysExt) :
Activity(&controller)
{
m_gameScene = nullptr;
120
switch (gameSysExt.m_launchOption)
{
case is::DisplayOption::MAIN_MENU:
m_gameScene = std::shared_ptr<is::GameDisplay>(new GameMenu(controller.getWindow(),
getView(),
*(this->controller->getSurface()),
gameSysExt));
break;
case is::DisplayOption::GAME_LEVEL:
m_gameScene = std::shared_ptr<is::GameDisplay>(new GameLevel(controller.getWindow(),
getView(),
*(this->controller->getSurface()),
gameSysExt));
break;
default:
is::showLog("Error : Scene not found !");
std::terminate();
break;
}
if (!m_gameScene->loadResources())
{
is::showLog("Error in loadResources function !");
std::terminate();
}
this->setBGColor(m_gameScene->getBgColor());
}
virtual void onUpdate(double elapsed)
{
if (m_gameScene->isRunning()) m_gameScene->step();
else
{
switch (m_gameScene->getGameSystem().m_launchOption)
{
case is::DisplayOption::MAIN_MENU:
{
using transition = segue<VerticalSlice, sec<2>>;
using action = transition::to<GameActivity>;
getController().replace<action>(m_gameScene->getGameSystem());
}
break;
case is::DisplayOption::GAME_LEVEL:
{
using transition = segue<VerticalSlice, sec<2>>;
using action = transition::to<GameActivity>;
getController().replace<action>(m_gameScene->getGameSystem());
}
break;
case is::DisplayOption::RESTART_LEVEL : // restart level (when player loses)
m_gameScene->getGameSystem().initData(false);
m_gameScene->getGameSystem().m_launchOption = is::DisplayOption::GAME_LEVEL;
using transition = segue<BlackWashFade>;
using action = transition::to<GameActivity>;
getController().replace<action>(m_gameScene->getGameSystem());
break;
default:
121
is::showLog("Error : Scene not found !");
std::terminate();
break;
}
}
}
virtual void onDraw(sf::RenderTexture& surface)
{
m_gameScene->drawScreen();
}
virtual void onStart() {}
virtual void onLeave(){}
virtual void onExit(){}
virtual void onEnter(){}
virtual void onResume(){}
virtual void onEnd() {}
};
Explanation
#include "../scenes/GameMenu/GameMenu.h"
#include "../scenes/GameLevel/GameLevel.h"
Source Code
Allows to include the two scenes in order to use them in the Activity class.
std::shared_ptr<is::GameDisplay> m_gameScene;
Source Code
Represents the instance that will store the scene to be executed. Please note this is a variable that adapts to the
scene!
case is::DisplayOption::MAIN_MENU:
m_gameScene = std::shared_ptr<is::GameDisplay>(new GameMenu(controller.getWindow(),
getView(),
*(this->controller->getSurface()),
gameSysExt));
Source Code
Launches the Main Menu scene. If the switch (m_gameScene->getGameSystem().m_launchOption) is equivalent to
case is::DisplayOption::MAIN_MENU.
if (m_gameScene->isRunning()) m_gameScene->step();
Source Code
Launches the step() part (content update) of a scene.
using transition = segue<VerticalSlice, sec<2>>;
using action = transition::to<GameActivity>;
getController().replace<action>(m_gameScene->getGameSystem());
Source Code
These instructions allow to pass from one scene to another by making a transition effect (Swoosh).
Remember that you can determine the scene that will be changed by another one by: switch (m_gameScene-
>getGameSystem().m_launchOption) and the case is::Displayoption:: scene_name:
122
Click here for more information on using the SWOOSH library functions.
m_gameScene->drawScreen();
Source Code
Launches the draw() (content display) part of a scene.
6. Improvement
There are still a lot of features that we can bring to this mini game, here are some of them:
- Avoid the player leaving the screen when moving it
- An interface in the Main Menu which allows you to change the language of the game
- An interface in the Main Menu which enables / disables the game sound
- Increase the speed of Obstacles and Bonuses as the score increases
- Add a button to pause the game
- Etc.
Now, it's your turn to play!
